Kraze, Inciter of Eruption

Kraze, Inciter of Eruption enters the battlefield
with a number of +1/+1 counters on it equal to
the amount of mana spent to cast it.
Remove three +1/+1 counters from Kraze:
Creatures get +3/+3, gain haste, and attack each
combat if able until end of turn.
Kraze can't have counters put on it by
noncreature sources.