Fecunda, Growing Terror

Fecunda, Growing Terror enters the battlefield
with X +1/+1 counters where
X is the amount of mana spent to cast it.
Fecunda, Growing Terror has
Hexproof as long
it's power is seven or greater.
Hydras you cast cost {x} less where X
is the amount of
+1/+1 on Fecunda, Growing Terror.