Vraska, Betrayal's Sting (Step and Compleat Foil) Finish:Foil Whenever Agent Frank Horrigan enters

Whenever Agent Frank Horrigan enters or attacks

Whenever Acererak attacks

Search your library for a green creature card

it has flying and is a Knight in addition to its other types

Vraska, Betrayal's Sting (Step and Compleat Foil) Finish:Foil Whenever Agent Frank Horrigan entersCompleated ({B P} can be paid with {B} or 2 life. If life was paid, this planeswalker enters with two fewer loyalty counters.) 0: You draw a card and you lose 1 life. Proliferate. 2: Target creature becomes a Treasure artifact with '{T}, Sacrifice this artifact: Add one mana of any color' and loses all other card types and abilities. 9: If target player has fewer than nine poison counters, they get a number of poison counters equal to the difference.