Conduit of Ruin [Battle for Zendikar]

Set: Battle for Zendikar Type: Creature — Eldrazi Rarity: Rare Cost: {6} When you cast this spell, you may search your library for a colorless creature card with mana value 7 or greater, reveal it, then shuffle and put that card on top.The first creature spell you cast each turn costs {2} less to cast.