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.
Near Mint - $200
Lightly Played - $200
Moderately Played - $100
Heavily Played - $100
Damaged - $100
Near Mint Spanish - $200
Lightly Played Spanish - $200
Moderately Played Spanish - $100
Heavily Played Spanish - $100
Damaged Spanish - $100
Foil Prices
Near Mint Foil - $0
Lightly Played Foil - $0
Moderately Played Foil - $0
Heavily Played Foil - $0
Damaged Foil - $0
Near Mint Foil Spanish - $0
Lightly Played Foil Spanish - $0
Moderately Played Foil Spanish - $0
Heavily Played Foil Spanish - $0
Damaged Foil Spanish - $0