Ninjutsu {3}{U}{U}
Flying
Whenever this creature deals combat damage to a player, create a token that's a copy of target attacking creature you control that entered this turn.

Flash
Flying
When this creature enters, exile target spell or nonland permanent. For as long as that card remains exiled, its owner may cast it by paying {3} rather than its mana cost.

When Shaman of Rime's Fury enters, create a 0/0 colorless Spirit creature token. Put a number of +1/+1 counters on that token equal to the total number of instant and/or sorcery cards you own in exile and in your graveyard.

When Snowscryer enters, surveil 3.

Amity — Whenever you attack with Splashing Mudskipper and exactly one other creature, surveil 1. When Splashing Mudskipper deals combat damage to a player this combat, you may transform it.

Ninjutsu {1}{U}
Whenever this creature deals combat damage to a player, you may have it become a copy of another target creature, except it's a Ninja in addition to its other types.

Flying
Whenever you draw your second card each turn, tap target nonland permanent.

Flying, deathtouch

Deathtouch
If an opponent would lose life, they lose that much life plus 1 instead.
Spellcharge 3

Flying
Favored
Whenever your Champion attacks, you may double its power until end of turn. If you do, sacrifice it at the beginning of the next end step.

When Beckoner of Ends enters, target player discards a card. Integrate that card.
Beckoner of Ends has deathtouch as long as a land card is integrated onto it.

Beloved Poppet can't be blocked by creatures with power 4 or greater.
Surface {4}{B}. This spell costs {3} less to cast if Beloved Poppet died this turn. Beloved Poppet surfaces transformed.

Flash
When Blightfang Zyxthax enters, discard a card. If you do, it gains deathtouch until end of turn.

Corrupt — When this creature enters, mill three cards. If you control a permanent with greater mana value than this creature, you may cache a creature card from your graveyard.

{2}, Sacrifice another creature: Put a +1/+1 counter on Coward-Eater. Draw a card.

When Deathcap Guardian enters, exile any number of permanent cards from your graveyard. When you do, put X +1/+1 counters on Deathcap Guardian and up to one target creature gets -X/-X until end of turn, where X is the number of cards exiled this way.

Landfall — Whenever a land you control enters, surveil 2.

Decayed
{1}{B}, Exile Expendable Medic from your graveyard: Return target creature card from your graveyard to your hand. Activate only as a sorcery.

Lifelink
When Gloomy Meteorologist enters, it acclimates.
Whenever an ability of a Weather you control triggers, Gloomy Meteorologist deals 1 damage to target player or planeswalker.

Level up {2}{B}
[level 1-2] This creature gets +1/+1 for each creature and/or enchantment card in your graveyard.
[level 3+] This creature gets +1/+1 for each creature and/or enchantment card in all graveyards.

Lifelink
Pay the equip cost of an Equipment you control: Return Gutwrenched Martyr from your graveyard to the battlefield with a finality counter on it. Attach that Equipment to it. Activate only as a sorcery.

Flying
When this creature enters, create a black Subroutine enchantment token named TICK with “Whenever this Subroutine runs, each opponent loses 1 life and you gain 1 life.”

Whenever Lurking Vyrkolakas attacks, exile target card from a graveyard. If a nonland card was exiled this way, put a +1/+1 counter on this creature. If a land card was exiled this way, this creature gains lifelink until end of turn.

When this creature enters, create a Treasure token.
Damned — At the beginning of your end step, this creature deals 1 damage to each opponent and you gain 1 life if you've sacrificed a permanent this turn.

Flying
Equipped creature gets +2/+0.
Equip {2}
Spellcharge 2