The Recall button in game
Recall is an ability that all players have access to regardless of selected champion. Recall causes your champion to hard channel for 8 seconds (4.5 seconds in Dominion), if the channel is not interrupted the champion will be teleported to their team's Spawn Pool.
Gameplay
Recall is activated by either clicking the Recall button on the ability panel or by pressing the key that the button is bound to ("B" by default). Recall's channel can be interrupted by the champion performing a variety of actions such as casting abilities or moving, by being hit by an enemy's attacks or spells or by allied displacement spells such as 
Anivia's 
Crystallize & 
Trundle's 
Pillar of Ice. Things that do not break Recall's channel include: emotes (e.g. /laugh, /joke), certain summoner spells (e.g. 
Barrier), and some items (e.g. 
Randuin's Omen), and having allied spells cast on you (e.g. 
Janna's 
Eye of the Storm).
Enhanced Recall
Dominion's Enhanced Recall
When Dominion was released, Recall was remade to fit in to the game mode's fast-paced style, creating Enhanced Recall which has a 4.5 second channel time.
Improved Recall
In Season Two, the Utility mastery tree included the tier 1 mastery 
Improved Recall to reduce the channel time of Recall by 1 second and Enhanced Recall by 0.5 seconds.
In Season Four, the Utility Mastery Tree includes the tier 1 mastery 
Phasewalker to reduce the channel time of Recall by 1 second and Enhanced Recall by 0.5 seconds.
Baron Recall
If a champion has the 
Hand of Baron, recall is improved:
- Reduces channel time by 4 seconds.
- A successful recall restores 50% of your champion's maximum health / mana and grants +50% movement speed for 8 seconds.
Development history
Recall artwork
The Recall function was originally tied to 
Blue Pill, which was a purchasable item that could be activated to return to base. The function was then made into an optional summoner spell, and eventually into a feature inherent in all champions.
Recall Animation
- Main article: Recall/Animations
Since V1.0.0.140 patch, new champions and certain skins, like legendary skins (e.g. 
Battlecast Prime Cho'Gath), have received a special recall animation and a few have received special quotes. Additionally, when an older champion gets a visual upgrade, all of their skins are outfitted with a new recall animation.
Since the release of 
Vi, with the exception of 
Quinn, the recall animations between the classic skin and the first released alternate skin of a Champion differ from one another. For example, classic 
Lucian folds his guns before him, while Hired Gun Lucian produces a chair to sit in with drinks in hand.
Player disconnection
When a player leaves the game his or her champion will automatically attempt to walk back to base. Soon after arriving at the base, the champion gains a huge bonus to magic resistance and armor; this is to prevent enemies from using global abilities (like 
Karthus' 
Requiem and 
Draven's 
Whirling Death) to instantly kill champions that have disconnected early in the game. Players who have disconnected prior to the game starting are granted the same bonus Magic Resistance/Armor.
Notes
- Recall is neither visible nor audible through the fog of war.
- It is sometimes possible to be damaged while recalling, but still return to base. This happens if the damage is taken within an extremely small window (approx. 0.2 seconds or less) before the channel completes.
- If this happens while recalling with very low health, it is actually possible to arrive dead at the base.
Trivia
- The old
Blue Pill is possibly a reference to the film The Matrix. In the film Neo is offered the chance to take a red or a blue pill, signifying his choice of whether to continue living in the world he knows or to wake up. - It was previously possible for champions with abilities that make them dash to an enemy champion to follow an enemy that has just finished recalling and teleported to base, making the champion fly all the way to the enemy base.
- Projectiles will still do so.
- If you recall while the Nexus is destroyed, the camera will attempt to center on your champion rather than the exploding Nexus.
- When he was first remade, an oversight allowed Ryze to be able to use Recall to trigger his Arcane Mastery passive, so he could refresh the cooldowns of all of his abilities by simply rapidly pressing the recall key.
Video
Patch history
V4.4:
- Damaging a shielded champion will now interrupt Recall, even if the shield is not broken.
V4.1:
- Icon updated.
- Added new recall particles.
- Improved Recall no longer causes the Recall sound to keep playing after the player cancels the spell.
- Recall particles no longer appear on champions as they come out of Fog of War.
- Champions will now attempt to run home immediately when disconnecting, rather than attempting to Recall.
- Disconnected players will now run home if the Recall is interrupted.
- Now has a buff icon and sound.
- Fixed a bug where for some machines the Blue Pill image covers the first summoner spell slot.
- Blue Pill particle now correctly disappears upon being canceled or broken.
- Removed buff icon for Teleport Home.
- Fixed an issue with Teleport Home and Tear of the Goddess.
- Teleport Home skill now has a new particle that matches its duration.
- Blue Pill cast time increased to 8 seconds from 4 seconds.
- Teleport Home is now also bound to "b" and added as a button in the HUD.
- Cast time on Teleport Home (Hotkey 7) increased to 8 seconds from 4 seconds.