Quote from Zemoo »
Zemoo, Indentured Pumble 1UR
Creature - Human Artificer (R)
~ cannot be blocked by artifact creatures or equipped creatures.
Whenever ~ deals combat damage to an opponent, that player reveals the top card of their library. You may search your library for an artifact card with the same converted mana cost as the revealed card and put it into your hand, if you do, shuffle your library.