Egg of the Colonizers

Egg of the Colonizers enters the battlefield
with 5 essence counters on it.
Remove an essence counter from Egg of
the Colonizers and pay {w}: gain 3 life.
{u}: draw a card.
{g}: put a +1/+1 counter on target
creature you control.
{b}: Return target creature card from your
graveyard to your hand.
{r}: Deal 2 damage to target player.