(Dry Grave isn't a spell.)
At the beginning of your upkeep, Dry Grave deals 2 damage to target creature you control.
All creatures have Mountainwalk.
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead.
