Myr Battlesphere

Set: Scars of Mirrodin (#180)

Rarity: Rare

Type: Artifact Creature — Myr Construct

Mana Cost: {7}

P/T: 4/7

When Myr Battlesphere enters the battlefield, put four 1/1 colorless Myr artifact creature tokens onto the battlefield. 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 defending player.