Warm up (passive) : Fizz recovers mana from each abilities used by any champions (and hiself) around him
Water dash : Fizz transform himself into water and dash forward to deal magic damage to each unit he strikes
Water control : Passive, Fizz increases his mana and hp regen by second, Active : Activating Water control, fizz empowers his next attack to deal extra bonus damage over time to the unit striked
Fish skin : Fizz gains a shield that block some damage, slows the attackers and returns a part of the damage dealed to Fizz to the attackers (like a thornmail but it also work on skills but not turrets)
Remous (ultimae) : On activating, Fizz channels waves of water that bring back enevy units near of him (like galio but no taunt and damage per sec ), the waves also slowing the ennemies
that would be amazing skills by the way i'm sorry for my terrible english :S i hope you can understand me !!