Possessed Aven

Creature - Bird Soldier Horror 3/3, 2UU (4)
Flying
Threshold - As long as seven or more cards are in your graveyard, Possessed Aven gets +1/+1, is black, and has "{2}{B}, {T}: Destroy target blue creature."¹
Illus. Scott M. Fischer

Crystal Keep Rulings Summaries

• Note - Also see Threshold, Rule 502.23.

Format Legality	Legal in Vintage, Legacy Banned in Extended, Standard
Printings (1/6)	Torment (Rare)