Shuthalar, Hidden City

{t} : Add {g}{g}{g} to your manapool. Spend this
mana only to cast green creature spells.
{x}{g}, sacrifice Shuthalar, Hidden City : Create
an X/X legendary green hydra creature token
named Korovos with haste and shroud.
Shuthalar was the safest city on Mythran, but that
all changed the day Korovos invaded.