Create a Mechanic.

[Komandon]

I'm sorry if this has been done before. This is my first topic post.

Idea of the game is you create a new mechanic. Either a new keyword, alteration to an existing on such as how multikicker is a thing.
Name your mechanic. Insert the reminder text and have the next poster create a card that goes with it.

Here goes.

Tertiary (*insert cost*) (You may cast this spell for its Tertiary cost if it was the third spell cast this turn. Casting related to stack order doesn't effect the order of this ability. )

[AnotherAlias]

Ancient Charm
Instant - Uncommon
Choose one —
• Counter target spell unless its owner pays .
• Discard two cards, then draw two cards.
• Return up to one target artifact or enchantment to its owner's hand.
Tertiary (You may cast this spell for its Tertiary cost if it was the third spell cast this turn. Casting related to stack order doesn't effect the order of this ability.)

Next:

Pilgrimage X (During your turn, you may pay and put this spell X cards down from the top of your library with "you may cast this spell without paying its mana cost.")

[Komandon]

Seasonal Boon 2G
Instant
Create two food tokens.
Pilgrimage 4 (During your turn, you may pay 2 and put this spell 4 cards down from the top of your library with "you may cast this spell without paying its mana cost.")

Next:

Affliction (This spell or permanent gets some bonus as long as it's controller has at least one poison counter.)

[lookingupanddown]

Toxic Shock R
Instant (Common)
Affliction — Toxic Shock deals 2 damage to target creature or planeswalker. If you have one or more poison counters, Toxic Shock deals 1 damage to that permanent's controller.
The venom burned his hand, and in retaliation the sparkmage kept the current flowing through the imp and into its master.

Next:
Alignment (This permanent enters the battlefield with a charge counter on it for each permanent with alignment you control.)

[AnotherAlias]

Trinket Manufacturer
Artifact Creature - Assembly-Worker - Common
Alignment (This permanent enters the battlefield with a charge counter on it for each permanent with alignment you control.)
Trinket Manufacturer's power and toughness are equal to the number of charge counters on it.
Remove a charge counter from Trinket Manufacturer: Regenerate Trinket Manufacturer.
*/*

Next:

Second chance (When a creature with second chance dies, you may pay {2} and return it to its owner's hand without second chance instead.)

[Komandon]

Laboratory Assistant 1u
Creature - Human Wizard
When Laboratory Assistant enters the battlefield mill two cards.
Whenever any cards are put into your graveyard from your hand or library you may scry 1.
1/1
Second chance (When a creature with second chance dies, you may pay {2} and return it to its owner's hand without second chance instead.)


Next:

Swim (As long as you control an untapped island or swamp this creature can't be blocked except by creatures with swim, islandwalk or swampwalk.)

[Apellosine]

Light Fingered Bucaneer 1uu
Creature - Merfolk Pirate (U)
Swim (As long as you control an untapped island or swamp this creature can't be blocked except by creatures with swim, islandwalk or swampwalk.)
When Light Fingered Bucaneer deals combat damage to a player, you may return it to its owner's hand. If you do, you gain control of target artifact defending player controls.
2/1

Next:
Quick Draw (You may cast this for <cost> as if it had flash if you control an attacking or blocking creature, if you do, attach this to an attacking or blocking creature you control.)

[AnotherAlias]

Deputy's Pistol
Artifact - Equipment - Uncommon
Equipped creature gets +1/+1 and has first strike.
Equip
Quick Draw (You may cast this for as if it had flash if you control an attacking or blocking creature, if you do, attach this to an attacking or blocking creature you control.)

Next:

Excavate (Exile target artifact card from your graveyard. For as long as that card remains exiled, this has the activated abilities of that card, except any time the rules text would refer to that card by name, change it to refer to this card by name instead.)

(For "Second chance," by the way, I accidentally put {2} instead of because that's what one would put in the card creator.)

[Komandon]

Transhumanist 2uu
Artifact Creature - Human Artificer
When Transhumanist enters the battlefield mill 3 cards and Excavate (Exile target artifact card from your graveyard. For as long as that card remains exiled, this has the activated abilities of that card, except any time the rules text would refer to that card by name, change it to refer to this card by name instead.)
2U, shuffle excavated artifact from exile back into your library: Return Transhumanist to its owners hand.
2/4

Next:

Salvo (Copy this spell for each nontoken permanent that entered the battlefield this turn. You may choose new targets for each copy.)

[lookingupanddown]

Scattershields W
Instant
Prevent the next 1 damage dealt to target creature or planeswalkers this turn.
Salvo (Copy this spell for each nontoken permanent that entered the battlefield this turn. You may choose new targets for each copy.)
The novice throws their shields wide because they can't control the surge of magic. The expert throws their shields wide for greater coverage. Fortunately for the novice, the result is the same.

Next:
Stockpile X (Reveal cards from the top of your library until you reveal X creature cards. Put all cards revealed this way into your graveyard.)

[AnotherAlias]

Delve-o-Matic
Artifact Creature - Construct
When Delve-o-Matic enters the battlefield stockpile 3. (Reveal cards from the top of your library until you reveal 3 creature cards. Put all cards revealed this way into your graveyard.)
, : Return target creature card from your graveyard to your hand.
3/4

Next:

Witchcraft — Whenever you cast an instant or sorcery spell with mana value 2 or more, [SOMETHING].

[Komandon]

Lunar Dancer 1UU
Creature - Human Shaman
Protection from wolves and werewolves.
Witchcraft— Whenever you cast an instant or sorcery spell with mana value 2 or more, you may return target permanent you control to its owners hand. If you do draw a card and discard a card.
2/1


Next:
Monochromatic {insert mana color} (If this spell was cast only using {insert manacolor} *{some effect}*)

[lookingupanddown]

Drag into the Mire 2BB
Instant
Monochromatic black— Exile target creature. If this spell was cast only using black mana, you gain life equal to its toughness.
The bog was hungry, and the cycle of death only grew that hunger.

Next:
Tidal (At the beginning of your upkeep, if this permanent has no tide counters on it, put a tide counter on it. Otherwise, remove all tide counters from it.)

[AnotherAlias]

Cove Corsair
Creature - Merfolk Pirate
Tidal (At the beginning of your upkeep, if this permanent has no tide counters on it, put a tide counter on it. Otherwise, remove all tide counters from it.)
As long as Cove Corsair has a tide counter on it, it gets +2+2 and has swim. (As long as you control an untapped island or swamp this creature can't be blocked except by creatures with swim, islandwalk or swampwalk.)
2/2

Next:

Vampiric (Whenever a creature with vampiric deals combat damage to a creature, that creature becomes a 2/2 black Vampire creature in addition to its other types and colors and you gain control of it.)

[Komandon]

Queen Lian of Torrezon 3WBB
Legendary Creature - Vampire Noble
Flying
Tap a two untapped vampires: untap Queen Lian of Torrezon. Activate this ability only once per turn.
Vampiric (Whenever a creature with vampiric deals combat damage to a creature, that creature becomes a 2/2 black Vampire creature in addition to its other types and colors and you gain control of it.)
4/4

Next:

Ousting (Choose any number of permanents, then remove a counter of any kind from those permanents.)

[lookingupanddown]

Scavenging Raider 1RR
Creature - Azra Rogue
Whenever Scavenging Raider attacks with two or more other creatures, ousting. (Choose any number of permanents, then remove a counter of any kind from those permanents.)
At the beginning of your end step, if three or more counters were removed from a permanent this turn, create a Treasure token.
"And if you wedge your knife just like that... any gemstone larger than a wine cork will pop right out."
2/1

Next:
Placid (This creature can't attack unless you have the lowest life total among players.)

[AnotherAlias]

Portly Glutton
Creature - Human
Placid
When Portly Glutton enters the battlefield, create a Food token.
Whenever you sacrifice a Food put a +2/+0 counter on Portly Glutton.
0/4

Next:

Preferred Terrain — If you control a(n) [BASIC LAND TYPE], [ABILITY]

[Apellosine]

Kindly Hunter 1gg
Creature - Human Ranger
Preferred Terrain - Whenever Kindly Hunter Attacks, if you control a basic Forest, create a Food token.
Kindly Hunter has first strike as long as you control 3 or more Food.
4/2

Next:
Seed (Whenever you cast a creature spell, you may pay , if you do, create a 1/1 green Saproling creature token.)

[Komandon]

Mushroom Farm
Enchantment - Aura
Enchant land.
Enchanted land has Seed (Whenever you cast a creature spell, you may pay {G/W}, if you do, create a 1/1 green Saproling creature token.)
Sacrifice a saproling: Untap enchanted land.

Next:
Horde N (When you cast this creature create N token copies of this creature.)

[lookingupanddown]

Hornet Horde 5BG
Creature - Insect
Flying, deathtouch
Horde 3 (When you cast this creature, create 3 token copies of it.)
When Hornet Horde dies, each opponent loses 1 life, then untap a land you control.
1/1

Next:
Prismatic (This creature is all colors.)

[AnotherAlias]

Prismkeeper Manamake
Artifact Creature - Construct
Prismatic (This creature is all colors.)
: Add .
1, : Add one mana of any color.
0/2

Next:

Feast — [ability]. Repeat this process X times, where X is equal to the number of creatures that died this turn.

[LandellXil0cent]

Growing Adephage
Creature - Insect (U)
Trample
Feast -- When Growing Adephage deals combat damage to a player, put a +1/+1 counter on it. Repeat this process X times, where X is equal to the number of creatures that died this turn.
1/1

Next:

Cuteness (A creature with cuteness can only be blocked by creatures with intimidate, menace, or artifact creatures)

[lookingupanddown]

Child of the Crossroads 2B
Creature - Vampire
Cuteness (A creature with cuteness can only be blocked by creatures with intimidate, menace, or artifact creatures.)
Lifelink
As long as Child of the Crossroads is untapped, it's a Human and loses all other creature types.
"No mortal child will ever be traveling the roads of Stensia after nightfall of their own volition."
—Odric, the Sunfang
1/1

Next:
Malignant (Whenever you put a +1/+1 counter on this creature, another target creature gets -1/-1 until your next upkeep.)

[LandellXil0cent]

Thirsting Krasis
Creature - Vampire Mutant (U)
Malignant (Whenever you put a +1/+1 counter on this creature, another target creature gets -1/-1 until your next upkeep)
Evolve
2/1

Next:
Enfold a land into your kingdom (Target land you control becomes 'enfolded') (it becomes enfolded, similar to monstrous, it cares about the number of enfolded lands.)

[AnotherAlias]

Control the Center
Sorcery
Enfold a land into your kingdom. Then draw a card each enfolded land you control. (Target land you control becomes 'enfolded')
Raid — If you attacked with a creature this turn, untap each enfolded land you control

Next:

Clique — If you control 3 or more [SUBTYPE]s, [ABILITY].