Kessig Destroyer

When this creature transforms, destroy a creature and put a +1/+1 counter on this creature.
Double strike, protection from blue
{r}: This creature gets +1/+1 until end of turn.
{1}{r}: This creature deals 2 damage to any target.
{4}{r}{r}: Create a red artifact named the "The Heart Of Lighting" with {t}: The Heart Of Lighting deals 3 points of damage to target player or creature.
On each upkeep, if 2 or more spells were cast last turn, transform this creature.