Aatrox fills his Blood Well through his abilities, and it empties while out of combat. When the Blood Well is filled, Aatrox gains Hellbent for 4 seconds as the Blood Well drains. During Hellbent, dealing or taking damage against enemy champions will completely fill the Blood Well and refresh Hellbent duration.
Hellbent:Aatrox gains 25% increased base AD and 20% / 30% / 40% / 50%bonus attack speed. Upon taking fatal damage Aatrox will revive over 3 seconds, recovering 30% of maximum health over the duration. Upon reviving, Aatrox instantly recovers 100% of Blood Well. Aatrox cannot revive more than once every few seconds.
When Aatrox enters stasis while he was being targeted by a turret, the turret will choose a new priority target and Aatrox will not be targeted even after stasis ends (unless he or an allied champion is the only viable target for the turret). In other words, Aatrox will drop turret aggro when he enters stasis.
The attack counter between Blood Thirst and Blood Price is shared, meaning that toggling the ability with one empowered attack prepared will immediately allow use of the empowered attack of the other.
Toggling between Blood Thirst and Blood Price does not reset the basic attack timer. It will, however, cancel an empowered basic attack in its windup animation if it is toggled during that time.
Toggled abilities do not count as ability activation for the purposes of effects such as Spellblade or Force Pulse.
Aatrox's basic attack animation correlates with the amount of stacks for Blood Thirst/Price. The first basic attack animation (after leveling up Blood Thirst/Price or proccing an empowered basic attack) is Aatrox swinging his sword to the left, the second is to the right and the third basic attack animation (which will be affected by Blood Thirst/Price) is Aatrox stabbing the target.