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.
NM-Mint - $1.00
Lightly Played - $0.90
Moderately Played - $0.80
Heavily Played - $0.70
Damaged - $0.50
NM-Mint Non English - $1.00
Lightly Played Non English - $0.90
Moderately Played Non English - $0.80
Heavily Played Non English - $0.70
Damaged Non English - $0.50
Foil Prices
NM-Mint Foil - $14.70
Lightly Played Foil - $13.30
Moderately Played Foil - $11.80
Heavily Played Foil - $10.30
Damaged Foil - $7.40
NM-Mint Foil Non English - $14.70
Lightly Played Foil Non English - $13.30
Moderately Played Foil Non English - $11.80
Heavily Played Foil Non English - $10.30
Damaged Foil Non English - $7.40