Raptor’s Ultimate Mace (MP16-EN145)

Equip only to a "Raidraptor" monster. It gains 1000 ATK. When the equipped monster is targeted for an attack by a monster whose ATK is higher than the equipped monster: You can add 1 "Rank-Up-Magic" Spell Card from your Deck to your hand, and if you do, you take no battle damage from that battle.

spell / Equip, 2016 Mega-Tin Mega Pack