Phoenix in Marvel Super War is an energy hero. She has 10 attacks to select from, they can be used to provide control or can be used to harass or a combination of both.
Phoenix Passive allows her to wields 10 abilities by fusing three sources of her powers: Phoenix Force, Telekinesis, and Psionic Energy.
Life and Fire – Passive: Phoenix wields 10 abilities by fusing three sources of her powers: Phoenix Force, Telekinesis, and Psionic Energy.
Rise from the Ashes: Upon taking a fatal blow, Phoenix accesses the Phoenix Force to form a protective barrier. If this barrier is not broken within the time limit, Phoenix is reborn.”
Upgrade Phoenix Force to increase the damage of Phoenix Flame, Phoenix Skyfire, and Phoenix Spark, while also increasing Energy Penetration.
Upgrade Telekinesis to increase the damage of Telekinetic Branding and Telekinetic Blast while restoring HP every second.
Upgrade Psionic Energy to increase the damage of Psionic Bolt and Psionic Barrier while restoring extra EP every second.
Ability 1-1: Phoenix Flame
Fuse: Phoenix Force + Phoenix Force + Phoenix Force
Phoenix summons a firebird at the specified location, flying forward after a brief delay and dealing damage to enemies in its path.
Ability 1-2: Phoenix Skyfire
Fuse: Phoenix Force + Phoenix Force + Telekinesis
Phoenix rains fire from above at the specified location, dealing damage and slowing enemies in range.
Ability 1-3: Phoenix Spark
Fuse: Phoenix Force + Phoenix Force + Psionic Energy
Phoenix releases a firebolt in the specified direction, dealing damage and slowing the enemy hit.
Ability 2-1: Telekinetic Branding
Fuse: Phoenix Force + Telekinesis + Telekinesis
Phoenix unleashes telekinetic energy at the specified target, dealing damage and slowing them while adding a mark. Attacking a marked target cause extra damage.
The mark can be stacked. Each time Phoenix casts an ability on a marked target, its mark’s duration refreshes.
Ability 2-2: Telekinetic Blast
Fuse: Telekinesis + Telekinesis + Telekinesis
Phoenix unleashes telekinetic energy around her, dealing damage to enemies in range.
Ability 2-3: Telekinetic Aura
Fuse: Telekinesis + Telekinesis + Psionic Energy
Phoenix surrounds her body with a telekinetic force field and gains acceleration. Upgrading her Telekinesis grants extra shield points.
Ability 3-1: Psionic Bolt
Fuse: Phoenix Force + Psionic Energy + Psionic Energy
Phoenix unleashes psionic energy at the specified location, dealing damage to enemies in range after a brief delay and launching them up.
Ability 3-2: Psionic Barrier
Fuse: Telekinesis + Psionic Energy + Psionic Energy
Phoenix creates a psionic force field around herself, dealing damage to enemies in range after a brief delay and launching them up.
Psionic Barrier shields Phoenix from all damage beyond the force field.
Ability 3-3: Psionic Aegis
Fuse: Psionic Energy + Psionic Energy + Psionic Energy
Phoenix protects herself with a psionic shield that is immune to control effects. Upgrading Psionic Energy grants extra shield points.
Ultimate: Phoenix Nova
Phoenix releases a blast with a large radius centered upon herself.
Phoenix can unleash Phoenix Nova while Rise from the Ashes is active.
Arc Reactor, Antimatter Cannon, Lightning Feet, Darkhold, Cosmic Cube, and Wand of Watoomb
She has 3 powers Phoenix Force, Telekinesis, and Psionic Energy, so upgrade the power which you want to use or the combination you want to use first.
Early Game (Mid or support to MM)
In my experience, I found that Phoenix Skyfire and Phoenix Flame combo is good for early-game. Phoenix Skyfire and Phoenix Flame allow you to attack for distance and harass the enemy. Plus you need just Phoenix Force and Telekinesis to make them, so can just upgrade them.
Mid and late game
Mid-lane: I found Psionic Bolt becomes useful along with the above 2 skills. As Psionic Bolt will provide to the CC needed as an energy hero.
Bot lane as Support: When fighting a marksman Psionic barrier is a great skill as it blocks all the damage from outside the barrier. You can use Psionic Bolt if you want to provide CC.
The second skill combo as support to protect MM: Telekinetic Blast which will deal damage to fighter, assassin, or tank heroes, who attack you or the MM, plus will heal you. Psionic Bolt or Phoenix Skyfire along with Telekinetic Blast will make a good combo.