When a Blackwing monster is Normal Summoned to your side of the Field, you can add 1 Blackwing monster from your Deck to your hand that has less ATK than that monster.
Near Mint Unlimited - $5.20
Lightly Played Unlimited - $4.70
Moderately Played Unlimited - $3.90
Heavily Played Unlimited - $3.10
Damaged Unlimited - $2.60