Luna, the sharp mind

Haste, deathtouch
When Luna, the sharp mind enters the battlefield, put a Fart counter on up to two target creatures.
At the beginning of your end step, each opponent loses life equal to the number of creature they control with Fart counters on them and you gain that much life.
Creatures gain -1/-1 for each Fart counter on them.
{t} : Put a Fart counter on target creature