Yahenni, Undying Partisan

This spell can't be countered. When you cast this spell, take an extra turn after this one. Flying, protection from spells that are one or more colors, annihilator 6 When Emrakul is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

When you cast this spell, draw four cards. Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.) When Kozilek is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

When you cast this spell, destroy target permanent. Indestructible Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.) When Ulamog is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

Outlast W (W, T: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each creature you control with a +1/+1 counter on it has flying.

Outlast 1W (1W, T: Put a +1/+1 counter on this creature. Outlast only as a sorcery.) Each creature you control with a +1/+1 counter on it has first strike.

Flying Whenever a creature attacks, you may pay 3. When you do, put a +1/+1 counter on that creature.

Destroy target non-Elf creature.

Put a +1/+1 counter on target creature. That creature gains first strike until end of turn. You gain 2 life. (A creature with first strike deals combat damage before creatures without first strike.)