War Mammoth [Beta Edition] Avacyn Restored Promos Activated abilities of sources with

Activated abilities of sources with the chosen name can't be activated unless they're mana abilities

Set: Mirrodin Type: Instant Rarity: Common Cost: {2}{R} Add {R}{R}{R}{R}{R}

but I didn't expect it from the building itself

Set: Arena League 2001 Type: Basic Land — Forest Rarity: Rare ({T}: Add {G}

Set: Beta Edition Type: Instant Rarity: Rare Cost: {U} Target player draws three cards

War Mammoth [Beta Edition] Avacyn Restored Promos Activated abilities of sources withSet: Beta Edition Type: Creature Elephant Rarity: Common Cost: {3}{G} Trample I didn't think Mammoths could ever hold a candle to a well trained battle horse. Then one day I turned my back on a drunken soldier. His blow never landed; Mi'cha flung the brute over ten meters.