Brina, Coral Monstrosity

Trample, Ocean's Rage (If you control 8 or
more Islands when you cast this card, she gains Haste and Double Strike.)
{12}{u}{u}{u}{u}{u}{u}: Monstrosity 18. This ability costs {1} less to activate for each Island you control.(If this creature isn't monstrous, put ten +1/+1 counters on it and it becomes monstrous.)
If Brina, Coral Monstrosity was cast due to Brina, Coral Monarchy, her Monstrosity cost becomes {9}. When she becomes monstrous, destroy all non-Blue spells.

"How dare you