It is said (by some elder sage or other) that the hatchlings are highly susceptible, and that each essence exerts a unique influence on the incubating creature. Is there method to this madness? Trial and error, and some comparison of results, will surely reveal the rules of Greevil husbandry.

Greevil Eggs could be bought from the store, traded for, dropped in-game, or found in a chest. Each egg could be imbued with one of several Essences.

A single Greevil Egg was given out to those who defeated Roshan during Diretide 2012.

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