Petar the Humble

Flash
When Petar the Humble enters the battlefield,
counter target spell.
Sacrifice a Permanent: Depending on mana cost
of permanent you may
{g} add +1/+1 counter to Petar the Humble
{b} add -1/-1 counter to any creature
{r} 1 damage to any target
{w} gain 3 life
{u} scry 2