Molten Eggs

Defender
Molten Eggs enters the battlefield with 4 shell counters on it.
Whenever an island or blue creature enters the battlefield, put a shell counter on Molten Eggs.
Whenever a mountain or red creature enters the battlefield remove a shell counter from Molten
Eggs, then if there are no more shell counters on Molten Eggs, sacrifice it and create three 2/2
red Dragon Hatchling creature tokens
with flying.