Bind Will 2UU
Sorcery
Gain control of target creature with mana value less than or equal to the number of cards in your hand.
"Your lesser mind compels you to obey."

Yawn W
Instant
Kicker 1U
Tap target creature. If Yawn was kicked, put a stun counter on that creature.
Knights left to do one night watch shift after another make for increasingly worse security.

Unrivaled Alliance XWW
Sorcery
Create X 1/1 white Ally creature tokens. If X is five or more, exile all nontoken Allies you control, then return them to the battlefield tapped.

Xavier's School for Gifted Youngsters Land - Base [sym=t]: add [sym=c]. [sym=t]: add 1 mana of any color. Spend this mana only to cast mutant spells, or to activate the ability of mutant permanents. Luke Cage Buys Avenger's Mansion 1g Sorcery As an additional cost to cast this spell, choose an oppo...

The Planeswalker War 3WW Battle - War (Any player can attack a War, and any player who isn't attacking can block creatures attacking this War.) When the Planeswalker War enters the battlefield, until end of turn, whenever a planeswalker enters the battlefield, put a loyalty counter on any number of...

Buviros, Dread Vessel 3BB Legendary Artifact Creature - Scarecrow Buviros, Dread Vessel enters the battlefield with a charge counter on it for each creature that died this turn. Buviros gets -1/-1 for each charge counter on it. Whenever Buviros attacks, defending player reveals the top card of thei...

Kiarlas of Arboria 3GGG Legendary Creature - Elemental Avatar Ward 2 Landfall — Whenever a land enters the battlefield under you control, another target creature gets +1/+1 and gains hexproof until end of turn. Whenever Kiarlas of Arboria or a creature with hexproof attacks, destroy up to one targe...

Null Moon's Presence 1WW
Enchantment
Other nonland permanents are white.
At the beginning of each opponent's end step, if they control more lands, search your library for a basic Plains card, put it onto the battlefield tapped, then shuffle.

Next: Herigast, Erupting Nullkite

alternate prompt: cover an existing land in snow

Crime Pays 1BBB
Enchantment
Whenever you commit a crime, create two 1/

Bioforge Beetle 1GU
Creature - Insect Mutant (Uncommon)
: Add GU. Spend this mana only to activate abilities.
4: Scry 1.
Many new mages keep a handful of beetles on themselves, while they still begin to build their mana reserves.
0/3

IIW: a new land subtype

The Masked Wanderer 3WW Legendary Planeswalker Ward 2 WW : Exile target creature that dealt damage to The Masked Wanderer this turn. +2 : Untap target creature and put a +1/+1 counter on it. 0 : Create a 2/2 white Samurai creature token with first strike. 4 (do we count "the" in these alp...

Tragedy of Girigiri BBBB Enchantment - Saga I — Create a 1/1 white Human creature token. II — Each player sacrifices a Human they control. Each player who can't loses 4 life. III — Exile this Saga, then return it to the battlefield transformed under your control. // Girigiri's Vengeance Enchantment...

Manaform Dryad 1GW Creature - Elemental Dryad Lifelink When Manaform Dryad is turned face-up, add two mana in any combination of colors. Spend this mana only to activate abilities. Disguise (g/w) (You may cast this card face down for 3 as a 2/2 creature with ward 2 . Turn it face up any time for it...

Judge's Authority 1WW
Enchantment - Aura
Enchant creature
Enchanted creature has vigilance and "2W, : Tap target creature. If that creature has power 2 or less, put a stun counter on it."

Prophetic Triumph 1GG Instant Untap all lands you control. You gain 1 life for each basic land untapped this way. The next creature spell you cast this turn can't be countered. That creature enters the battlefield with two additional +1/+1 counters on it. If that creature is your commander, it also...

Final Sanction 3WWW Sorcery Kicker WW Destroy all nonland permanents. If Final Sanction was kicked, players can't cast spells or attack until your next turn. The only sound louder than the booming voice that proclaimed "Judgement has been passed," was the heavy silence that followed for d...

Crime Pays 1BBB
Enchantment
Whenever you commit a crime

Tragedy of Girigiri BBBB Enchantment - Saga I — Create a 1/1 white Human creature token. II — Each player sacrifices a Human they control. Each player who can't loses 4 life. III — Exile this Saga, then return it to the battlefield transformed under your control. // Girigiri's Vengeance Enchantment...

Maw of Glissa 3BBGG Creature - Phyrexian Beast Horror Menace, trample Whenever Maw of Glissa becomes blocked by a creature, its controller sacrifices it. If that creature has power 4 or less, put a +1/+1 counter on Maw of Glissa. Otherwise, that creature's controller gets a poison counter. It melde...

Battle Tactics 1W
Instant
Target attacking creature gains first strike until end of turn. Another target attacking creature gets +2/+2 until end of turn.

Next: Kylox, Visionary Inventor

well that was a dud lol Magic Carpet 3r Artifact creature - construct mount Flying, haste Whenever Magic Carpet attacks, exile the top card of your library. Until end of turn, you may play that card, and if it has mana value less than or equal to magic Carpet's power, you may cast it without paying ...

alternate prompt: creature type Robot

Banner of Heroes X4 Artifact Banner of Heroes enters the battlefield with X charge counters on it. Whenever another historic permanent enters the battlefield, put a charge counter on Banner of Heroes. (Artifacts, legendaries, and Sagas are historic.) Commanders you cast cost 1 less to cast for each...

Wombat Plushie 4 Artifact Creature - Wombat Teddy Bear (art shows a wombat stuffed toy rearranging other stuffed toys in its pouch. one of the stuffed toys is wearing a hat) This spell costs 2 less to cast if you claimed a prize from an Attraction this turn. Whenever you claim the prize from an Att...