Avacyn's Collar, the Symbol of Her Church (MB2) #509 [EN/N]

{1}{W} · Artifact — Equipment · Equipped creature can't attack, block, or transform, and its activated abilities can't be activated. Shackle {3} ({3}: Attach to target creature you don't control. Shackle only as a sorcery.) · Illustrated by Olga Kharyton · Mystery Booster 2 #509 · Magic: The Gathering, MTG