Magna doesn't have an ultimate ability. Instead she uses 4 stances each with a special ability usable only when in the required stance to be used. Magna's Stance changing abilities are set on a 0.5 second cooldown when another stance changing ability is used.
Whenever Magna switches stances, she gains 50% of the bonuses from the last stance activated. Her auto attacks also give her 10 mana.
COST: 50 / 48 / 46 / 44 / 42 mana
Stance Activation:Magna equips her shield made out of the hardest minerals found on Runeterra, giving her bonus Armor and Magic Resist.
Stance Activation:Magna carries with her the Trident of the legendary Sea God Poseidon, giving her bonus AD and AP when she equips it.
Bonus AD and AP: 20 / 25 / 30 / 35 / 40
COST: 50 / 55 / 60 / 65 / 70 mana
Active:Magna surrounds herself with a Bubble Shield, blocking incoming damage until the shield breaks or after 10 seconds. After the Bubble shield reaches it's time or damage limit, it ecplodes, dealing magic damage to nearby enemies. You can reactivate this ability again to make the shield explode early.
Stance Activation: Magna activates her burning armor, dealing Magic Damage to enemies within attacking range of Magna. Magna's auto attacks also burns the enemy, dealing Physical damage over a period of 3 seconds
Aura Magic Damage per second: 10 / 15 / 20 / 25 / 30 (+ 10% AP
Bonus on-hit Damage per second: 15 / 20 / 25 / 30 / 35 (+ 20% AP
COST: 60 / 65 / 70 / 75 / 80 mana
Active Magna heats up her armor even more, Enhancing the Damage of Flame Body's DoT by a multiplier. (Does not increase the AP scaling).