Whenever you cast a spell that's both white and black, Nightsky Mimic has base power and toughness 4/4 until end of turn and gains flying until end of turn.
Chroma — Reveal the top ten cards of your library. For each blue mana symbol in the mana costs of the revealed cards, target opponent mills a card. Then put the cards you revealed this way on the bottom of your library in any order.
Other black creatures you control get +1/+1.Other green creatures you control get +1/+1.At the beginning of your upkeep, you may create a 1/1 black and green Worm creature token.
LifelinkVoracious Hatchling enters with four -1/-1 counters on it.Whenever you cast a white spell, remove a -1/-1 counter from Voracious Hatchling.Whenever you cast a black spell, remove a -1/-1 counter from Voracious Hatchling.
Wither (This deals damage to creatures in the form of -1/-1 counters.)Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)
Chroma — , Sacrifice a creature: Fiery Bombardment deals damage to any target equal to the number of red mana symbols in the sacrificed creature's mana cost.
Chroma — When Springjack Shepherd enters, create a 0/1 white Goat creature token for each white mana symbol in the mana costs of permanents you control.