Blackwing - Damascus the Polar Night

During either player's turn: You can discard this card to target 1 "Blackwing" monster you control; it gains 500 ATK until the End Phase.

From Yu-Gi-Oh! Trading Card Game.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6nmlny0loksb1i2r0x9mal.