|"Claw or spear, your end's the same."
It has been suggested that this article or section be merged into Champion ability.
The Ultimate is the fourth ability of most Champions. The ultimate is considered a champion's defining ability and is oftentimes considered their strongest. It is controlled by the 'R' key on the keyboard. Ultimates vary greatly between champions, with some having passive effects ( Jax's Grandmaster's Might), some having global effects ( Karthus' Requiem), some being spammable from having low cooldowns ( Kassadin's Riftwalk), some being auras ( Sivir's On The Hunt) and some summoning other units ( Annie's Summon: Tibbers). Whether an ultimate is considered a champion's strongest ability or not, using your ultimate effectively is crucial to playing any champion. Ultimates are defined by being able to be taken at levels 6, 11, and 16.
It is also possible to tell whether or not an allied Champion's ultimate is ready or not, by the indicator. The indicator is the green dot which is placed on top of the minimap or on the left of the screen (depending on your preferences) beside the respective champion's portrait. When the green light is on, the champion's ultimate is ready. If the light is off, the champion has either not learned the ability or it is currently on cooldown.
Elise's Spider Form/ Human Form, Nidalee's Aspect of the Cougar and Karma's Mantra are all available at level 1 for the respective champion, but can still be leveled up at level 6, 11 and 16, making them special in having 4 ranks.
Some champion ultimates have an unlimited, global range, allowing them to either support from afar or kill an otherwise safe enemy (i.e. a low health enemy who is staying in tower range for safety). Generally, the point of a global ultimate is to be a threat to enemy champions from anywhere on the map.