Verminous Amalgamation

Convoke (Your creatures can help cast this spell.
Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.)
Whenever you take damage, create a 1/1 green
Mouse creature token with "When this creature
deals combat damage to a player, sacrifice this creature and create a 1/1 blue Bat creature token
with flying and "When this creature is destroyed, create a 0/1 blue Moth creature token with
flying.""