Miracle Jurassic Egg

Defender
Whenever a Dinosaur enters the battlefield under your control put two hatchling counters on Miracle Jurassic Egg.
Sacrifice Miracle Jurassic Egg: Search your library for a Dinosaur creature card with converted mana cost X or less where X equals the number of hatchling counters that were on this card. Put that card onto the battlefield and shuffle your library.