Growing Mountain

{t} to add {r} OR
{t} to roll a D20 with the following effects:
1-3 Growing Mountain erupts destructively, remove from game
4-17 Growing Mountain erupts, add {r}{r} to your mana pool
18-20 Growing Mountain erupts and adds to its bulk significantly, place a new mountain token into play that is a copy of Growing Mountain.
Living in its shadow promises to be exciting