Magma Golem

X can only be paid in red mana. Magma Golem enters the battlefield with X +1/+1 counters on it.
Haste, trample, menace
{r}{r}{t}: Target creature your opponent controls takes 5 damage. If that creature dies from this effect, the owner of that card takes 2 damage.
{r}{r}: Magma Golem gains +2/+0 until end of turn.