Arena of Glory
Land
This land enters tapped unless you control a Mountain. : Add . , , Exert this land: Add . 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.)
rare · #215 · mh3
Previewed: May 28 · Spoiled by Kotaku
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Rank supplied by Scryfall from EDHREC; it may lag behind EDHREC. Deck counts and synergy percentages are not included.
