Seadren of Zendikar

+1: Create 3 colourless 1/1 Caltrop artifact creature tokens.
-2: You may destroy target arifact, then create a colourless Treasure artifact token with "Tap, Sacrifice this artifact: Add one mana of any color."
-8: You get an embelm with: "When a creature enters the battlefield under your control, it deals damage equal to it's toughness to any target.