Obsianus Golem [International Collectors' Edition] Phyrexian Shapeshifter return it to the battlefield

return it to the battlefield under your control

and rules that you need to play the game

Set: Happy Holidays Type: Instant Rarity: Rare Cost: {3}{U} Search target opponent's library for four cards with different names and reveal them

It requires the Core Rules to play

Obsianus Golem [International Collectors' Edition] Phyrexian Shapeshifter return it to the battlefieldSet: International Collectors' Edition Type: Artifact Creature Golem Rarity: Uncommon Cost: {6} (This card has square corners and a gold bordered back. Not tournament legal.) "The foot stone is connected to the ankle stone, the ankle stone is connected to the leg stone . . ." Song of the Artificer