Creature — Bird Soldier Horror

Possessed Aven

Possessed Aven trading card
Creature — Bird Soldier Horror1 exact printing

Flying Threshold — As long as there are seven or more cards in your graveyard, this creature gets +1/+1, is black, and has "{2}{B}, {T}: Destroy target blue creature."

From Magic: The Gathering.

Exact printings

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6ohq8mcr4dpb1h7ymxdccm.