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 - $3.10
Lightly Played Foil - $2.80
Moderately Played Foil - $2.50
Heavily Played Foil - $2.20
Damaged Foil - $1.60
NM-Mint Foil Non English - $3.10
Lightly Played Foil Non English - $2.80
Moderately Played Foil Non English - $2.50
Heavily Played Foil Non English - $2.20
Damaged Foil Non English - $1.60