Observer was a summoner spell only available to Riot Staff. Upon activation, the fog of war is cleared and all units may be seen. This effect only applies to the user who activated the spell.
The summoner skill is no longer available in any realm, instead replaced by Spectator Mode.
- The Observer spell was used by Phreak to record the Ionia vs. Noxus match. A similar system was used on the World Cyber Gaming 2010 to record the finale.
- If an enemy Nocturne uses Paranoia, the Observer loses vision for the duration.
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