Mother of Nesting Dragons

Flying
Landfall — Whenever a land enters the battlefield under your control, create a 0/2
red Dragon Egg creature token with defender
and "When this creature dies, create a 2/2 red Dragon creature token with flying and {r}: This creature gets +1/+0 until end of turn."
and {2}{r}{r}, Sacrifice this creature: Create a Nesting Dragon token.