Myr Battlesphere [Commander 2013] POP Series 7 "There's always room for improvement

"There's always room for improvement

) This creature can't block

Set: Beta Edition Type: Artifact Rarity: Rare Cost: {2} {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of

Set: Double Masters Type: Creature — Beast Rarity: Uncommon Cost: {2}{R}{G} Trample

or you'll disrupt its natural migrations

Myr Battlesphere [Commander 2013] POP Series 7 "There's always room for improvementSet: Commander 2013 Type: Artifact Creature Myr Construct Rarity: Rare Cost: {7} When Myr Battlesphere enters the battlefield, create four 1 1 colorless Myr artifact creature tokens. Whenever Myr Battlesphere attacks, you may tap X untapped Myr you control. If you do, Myr Battlesphere gets +X +0 until end of turn and deals X damage to the player or planeswalker it's attacking.