Hexvectix, Valakut Protector

{2}{r},Send a Mountain to the graveyard from
your hand or battlefield: Hexvectix, Valakut
Protector deals damage to target creature or
player equal to the number of mountains in
your graveyard. If this damage would destroy
a creature, exile it instead.
Whenever a creature is exiled by the effect of a
Dragon you control, you may put one Dragon or
basic land from your graveyard to your hand, and
destroy target non-basic land.