Guardian Angel

Guardian Angel
 Ally-targeting non-damaging movement type
 30 (60) m range
 17 m/s movement speed
 1.5-second cooldown
Mercy flies towards a targeted ally, allowing her to reach them quickly and provide assistance in crucial moments.
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Details

Mercy targets an ally and quickly flies toward their position. Any ally within 30 meters can be targeted, even the soul of dead allies. The ability can be reset midway by either releasing the button if Toggle Guardian Angel is off, otherwise by pressing the button again. Mercy can glide past the targeted ally by using the jump key.

In the Game Options, Mercy has an option that affects her Caduceus Staff:

• Guardian Angel Prefer Beam Target: When disabled, any hero that Mercy is facing will be the default target for Guardian Angel. If enabled, when Mercy has a beam connected to a hero not in front of her, she will fly to the connected hero instead; Mercy only flies to the hero in front of her when the beam is not connected to a hero. This can prove useful to Mercy because she can ignore line of sight and is still permitted to fly to her target. This means that she is able to exploit an aspect of her Guardian Angel with ease, by falling below her target and easily fly upwards to gain distance in height by jumping during the ability.

• Toggle Guardian Angel: When enabled, pressing the appropriate button will toggle Guardian Angel; another press will cancel it. Otherwise, the button must be held for the whole flight duration; if the button is let go, the ability will be canceled. Having the option disabled has an advantage. When it is disabled the game must constantly check if the target is within line of sight, so even if you see a teammate for even a fraction of a second; so long as you hold the button down, you will fly towards them.
• Guardian Angel Sensitivity: Adjust the sensitivity of Guardian Angel's targeting. The less value it is, the closer the distance between crosshair and the teammates has to be for assigning the target.

Patch changes

January 30, 2018 Patch: The speed bonus Guardian Angel receives when activating Valkyrie has been decreased by 50% Duration reduced from 20 seconds to 15 seconds.  October 17, 2017 Patch: Players can now glide past a targeted ally using the jump key; Cooldown no longer resets when Resurrect is activated.  February 28, 2017 Patch: New Hero Options: Guardian Angel Sensitivity.  July 19, 2016 Patch: Guardian Angel instantly resets upon using Resurrect.  April 5, 2016 (beta) Patch: Range increased slightly; Cooldown decreased from 2 seconds to 1.5 seconds; Will now destroy environmental objects when you come in contact with them; Can now be cancelled by using the ability again.  March 1, 2016 (beta) Patch: Can once again target the souls of dead allies.  February 18, 2016 (beta) Patch: Can no longer target the souls of dead allies.  February 9, 2016 (beta) Patch: Can now target the souls of dead allies.