Requirements You're mostly or totally submerged in water.
You temporarily shape your lower limbs into the tail of a hippocampus in order to swim away from a nearby foe after dealing a parting blow. Attempt a melee spell attack roll against the target's AC, dealing 2d6 bludgeoning damage on a hit (or double damage on a critical hit). Then, Swim up to 30 feet; if you already have a swim Speed, you can Swim up to your Speed with a +10-foot circumstance bonus. You gain a +2 circumstance bonus to your AC against reactions triggered by this movement. At the end of the movement, your lower limbs return to normal.
Spell Effect: Hippocampus Retreat
Heightened (+1) The damage increases by 1d6.
Traits
An ability with this trait involves an attack. For each attack you make beyond the first on your turn, you take a multiple attack penalty.
An action with this trait requires a degree of mental concentration and discipline.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
Effects that slightly alter a creature's form have the morph trait. Any Strikes specifically granted by a morph effect are magical. You can be affected by multiple morph spells at once, but if you morph the same body part more than once, the second morph effect attempts to counteract the first (in the same manner as two polymorph effects, described in that trait). Your morph effects might also end if you are polymorphed and the polymorph effect invalidates or overrides your morph effect. The GM determines which morph effects can be used together and which can't.