Lair of Ralagnos

{t}: add {g}{b}{r}
Hydras you cast cost {1}{g}{b} less to cast.
At the beginning of your upkeep, put an egg
counter on Lair of Ralagnos. Then if it has 5 or
more, remove them and create a 5/5 Hydra creature token.
{p/g}{p/g}{p/b}: Lair of Ralagnos becomes a 7/5 Elemental Hydra creature until end of turn. It's still a land.
Indestructible, Firm (Cannot be Exiled)