({W/B} can be paid with either {W} or {B}.) Flying Whenever Mourning Thrull deals damage, you gain that much life.

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.

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Enchant creature As long as enchanted creature is white, it gets +1/+2. As long as enchanted creature is black, it gets +2/+1.

Exile target card from a graveyard. Create a 1/1 white and black Spirit creature token with flying.

Target creature gets -2/-2 until end of turn.

Barren Moor enters the battlefield tapped. {T}: Add {B}. Cycling {B} ({B}, Discard this card: Draw a card.)

({T}: Add {W}.)

Scoured Barrens enters the battlefield tapped. When Scoured Barrens enters the battlefield, you gain 1 life. {T}: Add {W} or {B}.

Secluded Steppe enters the battlefield tapped. {T}: Add {W}. Cycling {W} ({W}, Discard this card: Draw a card.)

Target opponent reveals their hand. You choose a nonland card from it and exile that card.