MTGNexus

If you're having trouble, feel free to combine stuff across multiple sets!

Brood Licid 1GW
Creature - Licid Sliver (R)
GW, T: Brood Licid loses this ability and becomes an Aura enchantment with enchant creature. Attach it to target creature you control. You may pay {G/W} to end this effect.
Enchanted creature is a Sliver in addition to its other types.
Sliver creatures get +1/+1 for each Aura you control.
2/2

IIW: A victory lap for the Dimir, who are the winningest guild.

[ Oops i thought the challenge was to upshift uncommon wallers.

Im sorry

Rakshasa Tyrant 1BGU
Creature — Cat Demon
Trample
When Rakshasa Tyrant enters the battlefield, put the top three cards of your library into your graveyard.
Whenever one or more creature cards are put into your graveyard from anywhere, put that many +1/+1 counters on Rakshasa Tyrant.
2/2

Rakshasa Vizier was always cool but I felt we could do better since it was extremely focused on delve (or payback for graveyard hate). Sultai had some nice cards that cared about its core mechanics and graveyard interactions but didn't have enough actually viable variety of options. This one would play nice with both the self-milling we do to fuel Delve and, later in DTK, it would play well with Exploit.

The last ability's worded that way (and not "Whenever a creature card ... put a +1/+1 counter on") so as to be mindful of Hardened Scales, just like Rakshasa Vizier was.

IIW: Show us Return to Ixalan's fifth faction.

hm, should i judge so we can move along or are people just busy?

Choke Moon 2U
Enchantment (R)
Mountains don't untap during their controller's untap step.

IIW: Veil of Winter

Snapping Freshhopper UG
Creature - Crab Frog (U)
Graft 1 (This creature enters the battlefield with one +1/+1 counter on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.)
UG: Adapt 1 (If this creature has no +1/+1 counters on it, put a +1/+1 counter on it.)
1/1

iiw: an equipment people would actually play in standard

Not sure why there are so many Simic entries, but hey I might as well contribute

Shaggy Skaab 1GU
Creature - Zombie Werewolf (U)
T: Put the top card of your library into your graveyard.
At the beginning of each upkeep, if no spells were cast last turn, transform ~.
1/3
//
Moonlight Monstrosity (G/U)
Creature - Zombie Werewolf (U)
Whenever this creature transforms into ~, put the top three cards of your library into your graveyard.

~'s power and toughness are each equal to the number of creature cards in your graveyard.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform ~.
*/*

IIW: Mono-W

Simic Card UUGG
Creature - Choose three
+1/+1 counters stuff
Flying, Trample
more +1/+1 counters stuff
podpodpod
0/0

IIW: Simic + Phyrexia

Skyline Despot 4RR
Creature — Dragon (Rare)
When Skyline Despot enters the battlefield, you become the monarch.
At the beginning of your upkeep, if an opponent is the monarch, create a 5/5 red Dragon creature token with flying.
5/5

Paliano Vanguard 3W
Creature — Human Soldier (Rare)
Draft Paliano Vanguard face up.
As you draft a card, you may remove it from the draft face up. (Those cards aren't in your card pool).
Other Soldiers you control get +1/+1.
When Paliano Vanguard enters the battlefield, create X 1/1 white Soldier creature tokens, where X is the number of cards removed from the draft with cards named Paliano Vanguard with the same name.
2/2

Archetype of Virtue 6WW
Enchantment Creature - Angel (R)
Affinity for token creatures
Flying
Creature tokens you control get +1/+1 and have vigilance.
4/5

iiw: pingers

Core Capsule 1UG
Artifact - Equipment (R)
Living weapon
Equipped Creature gets +2/+2 and has "When this creature dies, search your library for a creature card with converted mana cost equal to 1 plus this creature's converted mana cost, put that card onto the battlefield, then shuffle your library."
Equip 3

IIW: Brexit: the Gathering

judge?

It's a pity we don't have the :meg: smiley because it's perfect for just this situation

r-r-r-remix

chetoos;
Delivering what the people wanted: Creature type mashups from Ixalan that might have saved the terrible draft format. Sadly missing in this 5-member cycle was the Merfolk Vampire, but that's ok. None of these individual cards move me in any particular way, unfortunately.

cythare: this makes me gag tbh. I do appreciate the Tempest mashup of sliver and licid (again, gross), though I wonder where you got that sliver ability from...

forestscarl: don't forget your IIW next time! You can't win without one.

spacemonaut: This specific combination of abilities feels a lot like Sidisi, Brood Tyrant meets rakshasa vizier, which is fine. I guess I wish it weren't SO closely sidisi despite largely fitting the challenge. TBH if this literally were Sidisi's first ability and vizier's ability i might like it more.

melli: isn't this more of a colorshift than anything? also lol.

wonderful: On principle I've come to dislike keyword mashups mostly because anything involving +1/+1 counters is cheating. ESPECIALLY GRAFT.

Tog: this really is a monstrosity. But, it works. You get an interesting tension where if you run it out naked on turn 3 with an empty graveyard the opponent can just skip their turn to potentially get a free kill when it flips. You get one activation, but if you miss... it dies before that trigger will resolve. I'm not actually sure if this is a positive (something tells me wizards wouldn't print a GAMER CARD like this anymore...), but i like the decision point.

melli again: no. but see comments on wonderful's entry.

subject16: thinking emoji

wonderful (real entry): I've run out of steam.

melli the third: Actually this is kind of neat. Living weapon version of birthing pod. Or, like, Pattern of Rebirth.

Winner: TOG for making my brain tick.

Next: Mono -W

p.s. this was a bad challenge, sorry. MOST CCC challenge involve some amount of remixing. Understanding the past and being able to reinterpret it is an essential skill for pushing the envelope with new design.

so in effect the IIW was blank. I'll try and give you guys a better one next time!

Sun-crowned Hoplite 2WW
Creature - human soldier
At the beginning of combat on your turn, choose up to X target creatures, where X is half of your devotion to white. Those creatures get +1/+1 and gain lifelink until end of turn.
3/3

IIW: Uncommon walkers from war of the spark upshifted to rare.

Seeta, Sinpurged 1WW
Legendary Creature - Human Cleric (R)
Vigilance
Eldrazi you control have protection from Humans.
Whenever a white creature you control deals combat damage to a player, put a +1/+1 counter on it and it becomes a colorless Eldrazi.
2/3

IIW: Dimir

Shefet Packbeast 2W
Creature — Camel (Uncommon)
You may exert Shefet Packbeast as it attacks. When you do, search your library for a Plains of Desert card and put it onto the battlefield tapped. Shen shuffle your library.
"In dire times, it has led us to a safer land."
—Djeru
2/3

Iiw: Your favourite Britney Spears song

Commander of Isembart 4WW
Creature — Human Knight (R)
Vigilance
When Commander of Isembart enters the battlefield, create two 2/2 white Knight creature tokens with vigilance.
If you would create a creature token, you may create a 2/2 white Knight creature token with vigilance instead.
3/3

IIW do something weird with tokens

Saintly Bodyguards 1WWW
Creature - Human Soldier (R)
The first 2 damage that would be dealt to each other white creature you control each turn is dealt to ~ instead.
2/9

IIW: Black Hydra

Mystic Wrestler 2WW
Creature - Human Warrior Cleric (U)
When Mystic Wrestler enters the battlefield, target creature gains lifelink until end of turn. You may have Wrestler of Restarr fight that creature.
4/3

IIW: You've been asked late in Ravnica: City of Guilds development to come up with a replacement mechanic for dredge after the mechanic has emerged as problematic.

Thalia's Presence WWW
Legendary Enchantment (R)
Creatures your opponents control enter the battlefield tapped.
Activated abilities of planeswalkers your opponents control cost 1 more to activate.
Whenever an opponent casts a noncreature spell, investigate unless that player pays 1.

iiw: a fresh take on dark confidant

Blinded by Faith 3W
Enchantment- Aura {R}
Enchant creature
Enchanted creature has vigilance.
As long as your devotion to white is greater than enchanted creature's power, you control enchanted creature.
Whenever a creature enters the battlefield, you may attach Blinded by Faith to it.
Sometimes the most dangerous foe is the one that pretends to be your salvation.

IIW: Other members of the Theros titans, or Elder creatures in general

Judge's Decree W
Sorcery (R)
Multikicker W
Destroy each creature with power less than or equal to the number of times Judge's Decree was kicked.

iiw: a new Cursecatcher ( / judge's familiar / mausoleum wander / etc)

Justice for All WWW
Enchantment (R)
Whenever a white creature you control attacks, you may exert it. If you do, detain target nonland permanent defending player controls.
"There is no liberty to be found within these walls."
-Samut, the Tested

IIW: The dunes of Amonkhet