Horrorclaw felt a vein popping on his neck, every time he released his acid mana, Aurora's light blocked it, she was his natural counter, and he was originally supposed to fight the Trident Marshal but Black Beard of course had to provoke the old Vincent, which ended in him having to deal with Aurora.
"Matriarch of the Light Palace get out of my way!!!", shouted Horrorclaw as he unleashed another portion of his mana.
The Maelstrom Sea is known for being unstable, and for that same reason Stellar ranks can't use their whole power or they could cause a disaster, it is an unwritten rule and one of the few things in which the four seas agree, anyone who destroys the balance of the space will be hunted down and eliminated by the all the other forces.
The Wild Tide Reef was also in part territory of the Maelstrom Sea, so Stellar ranks could at most excel half of their power safely, more than that and the space might collapse.