Fire Crystals

Pay{r}{r}{r}: Fire Crystals turns into a 3/3 dragon
token with haste, deathouch and lifelink until end
of turn. At the end of controlling player's turn it
turns back into a artifact.
Pay {r}{r}{r}{r}{r} and 3 life: Create a 12/12 dragon
token with haste and trample until end of turn.
At the end of the second turn this token is on the
battlefield sacrifice it and Fire Crystals.