Conduit of Ruin [Battle for Zendikar Promos] Magic Player Rewards 2009 you may gain control of

you may gain control of target creature for as long as you control Roil Elemental

And still you will not have suffered enough

bringing the divergent products of alternate pasts into the present

Set: Arena League 1999 Type: Legendary Artifact Creature — Golem Rarity: Rare Cost: {5} Whenever Karn

Conduit of Ruin [Battle for Zendikar Promos] Magic Player Rewards 2009 you may gain control ofSet: Battle for Zendikar Promos Type: Creature Eldrazi Rare Cost: {6} When you cast this spell, you may search your library for a colorless creature card with converted mana cost 7 or greater, reveal it, then shuffle your library and put that card on top of it. The first creature spell you cast each turn costs {2} less to cast.