Dukhaku, the Molten Maw

{t}: Add {r} to your mana pool.
{r}{r}{r}: Dukhaku, the Molten Maw becomes a
3/3 red Elemental creature with menace and
"{r}: This creature gets +1/+0 until end of turn." until end of turn. It's still a land.
The Maw demands immense tribute for those seeking its services. What it offers as service, is a conscription of cataclysmic power.