Arena of Glory enters the battlefield tapped unless you control a mountain.
T: Add R.
R, T, Exert Arena of Glory: Add RR. If that mana is spent on a creature spell, it gains haste until end of turn. (An exerted permanent won't untap during your next untap step.
NM-Mint Foil - $10.30
Lightly Played Foil - $9.20
Moderately Played Foil - $8.20
Heavily Played Foil - $7.20
Damaged Foil - $5.20
NM-Mint Foil Non English - $10.30
Lightly Played Foil Non English - $9.20
Moderately Played Foil Non English - $8.20
Heavily Played Foil Non English - $7.20
Damaged Foil Non English - $5.20