Freyr, God of Prosperity

This spell costs 1 less to cast for each creature you control with a +1/+1 counter on it.
Creature spells you cast cost 1 less to cast
for each creature you control with a +1/+1
counter on it.
When a creature you control with a +1/+1
counter on it dies in combat, you may put those
+1/+1 counter on another creature you control.