The Ur-Dragon [Commander Masters] Merfolk Wizard Mutant Set: Magic 2013 Type: Creature

Set: Magic 2013 Type: Creature — Human Scout Rarity: Uncommon Cost: {1}{G}{G} When Mwonvuli Beast Tracker enters the battlefield

but because you're there

Sacrifice Rakdos Locket: Draw two cards

Set: Phyrexia: All Will Be One Prerelease Promos Type: Artifact Rarity: Mythic Cost: {2}{U} Planeswalkers you control have "0: Proliferate" and "-12: Take an extra turn after this one

Set: Innistrad: Double Feature Type: Instant Rarity: Rare Cost: {1}{U}{U} {2}{B}

The Ur-Dragon [Commander Masters] Merfolk Wizard Mutant Set: Magic 2013 Type: CreatureSet: Commander Masters Type: Legendary Creature Dragon Avatar Rarity: Mythic Cost: {4}{W}{U}{B}{R}{G} Eminence As long as The Ur Dragon is in the command zone or on the battlefield, other Dragon spells you cast cost {1} less to cast. Flying Whenever one or more Dragons you control attack, draw that many cards, then you may put a permanent card from your hand onto the battlefield.