Big Chungus

+3: Add 3 mana of any 5 colors and destroy target permanent for each mana you use
-5: Destroy 5 creatures, destroy 5 artifacts, destroy 5 enchantments on any board and gain 5 life
-10: You get an emblem that says: "You gain 5 life on your upkeep and destroy the first 3 spells your opponets cast and destroy 3 opponents land"