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A Stance Ability is a special type of ability, which provide a persistent effect that lasts as long as the stance is active, and an activation effect, which gives benefits in the first instants of the activation. Rapid stance changing is prevented by a usually fairly low (1-2 seconds) shared cooldown (or global cooldown (GCD)), which places all other stance-like skills on cooldown whenever a stance is activated. Stances were introduced with the creation of Udyr.

When a stance is activated, an initial effect is performed, plus the champion will get a persistent effect as long as he doesn't change stance. Persistent effects are mutually exclusive, but activation effects may overlap if the shared cooldown is low enough. The one exception to this is that Sona's auras persist for 1 seconds after the activation of the next stance.

Example: Stance A grants a shield when activated and life steal as its persistent effect. Stance B grants an increased movement speed on activation and a stun every 5 seconds as persistent effect. Activating stance A and then quickly stance B will grant the champion a shield, a movement speed bonus and the ability to stun every 5 seconds, but no life steal. Sona's  Hymn of Valor provides an AD/AP aura, if she switches to  Aria of Perseverance, the AD/AP aura will remain for 1 additional seconds.

Champions that currently use the stance mechanic are Udyr and Sona. Udyr stances grant him persistent buffs to his autoattacks, and continually switching stance increase his attack speed. Sona instead has auto-targeted skills when she activates a stance and persistent auras that benefit her allies.

Current Stances List Edit

	Ability	Description
Sona	Hymn of Valor	(Stance) - Activation:Sona sends out bolts of sound, dealing magic damage to the nearest two enemy champions or minions. Persistent effect: Sona plays the Hymn of Valor, granting nearby allied champions bonus attack damage and ability power. Cooldown: 7 seconds
	Aria of Perseverance	(Stance) - Activation:Sona sends out healing melodies, healing herself and a nearby wounded ally. Persistent effect: Sona plays the Aria of Perseverance, granting nearby allied champions bonus armor and magic resistance. Cooldown: 7 seconds
	Song of Celerity	(Stance) - Activation: Sona energizes nearby allies with an additional burst of speed for 1.5 seconds. Persistent effect: Sona plays the Song of Celerity, granting nearby allied champions bonus movement speed. Cooldown: 7 seconds
Udyr	Tiger Stance	(Stance) - Activation: On his next attack, Udyr swipes at his target, making a normal attack and additionally dealing extra damage over 2 seconds as magic damage. In addition, Udyr gains an attack speed buff that lasts 5 seconds. Persistent effect: Udyr's basic attacks deal bonus physical damage equal to 15% of his attack damage. Cooldown: 6 seconds.
	Turtle Stance	(Stance) - Activation: Udyr gains a shield, for 5 seconds, that absorbs damage. Persistent effect: Udyr gains life steal. Cooldown: 6 seconds
	Bear Stance	(Stance) - Activation: Udyr gains increased movement speed for a few seconds.Persistent effect: Udyr mauls his target with such force that they are stunned for 1 second. This effect can only occur once every 6 seconds on the same target. Cooldown: 6 seconds
	Phoenix Stance	(Stance) - Activation: Udyr sends out pulsing waves of fire dealing magic damage each second to nearby enemies for 5 seconds. In addition, during this time Udyr's ability power is increased and his attack damage is increased by half of that amount. Persistent effect: Every third attack, Udyr engulfs the enemies in front of him in flames, dealing magic damage. Cooldown: 6 seconds