Summoner's Insight (Season 2013 Mastery)

Summoner's Insight Tier 1 utility mastery with 1 rank.

Effect per rank
Improves the following summoner spells:
 * Grants bonus health after reviving for 120 seconds.
 * Reduces cast time by 0.5 seconds.
 * Reduces cooldown by 15 seconds.
 * Increases mana restored by 25%.
 * Grants persistent sight of enemies revealed for 5 seconds.