Golden Sea Serpent

While you cast this spell, put any
number up to 9 -1/-1 counters
on Golden Sea Serpent. This spell
costs {x} less, where X is equal to
the amount of -1/-1 counters on
Golden Sea Serpent.
Spells you cast cost {x} less where X
equal to 9 minus every -1/-1 counter
on Golden Sea Serpent.