Similar to a druid's [Regrowth] spell, Riptide is both a direct healing spell and a heal over time spell. The direct heal and each tick of the heal over time effect have independent critical effect chances, with an initial critical heal having no effect on the healing over time component.
Being instant, the spell can be cast while moving and cannot be interrupted, which makes it a very powerful ability in PvP.
Tips and tactics
Its low mana cost and high amount of healing done over time make Riptide one of the Restoration shaman's best healing spells. Its main disadvantage is the six second cooldown.
[Resurgence] returns mana every time the spell crits, further increasing mana efficiency.
Patch 6.0.2(2014-10-14): Riptide's healing has been adjusted to put significantly more of it into the initial heal. The initial heal amount has been increased by 70%, while the periodic healing amount has been reduced by 20%.
Patch 5.4.0(2013-09-10): Mana cost has been reduced by 25%.
Patch 4.3.0(2011-11-29): Periodic healing coefficient has been increased by 50%. The initial direct heal is unchanged.
Patch 3.1.0(2009-04-14): This spell has a new icon and a new sound effect.
Previous icon was .
Patch 3.0.3(2008-11-04): Healing done increased. Now triggers Tidal Waves.