The sacrifice effect occurs every time you cast a spell (Spell Totems, traps, mines, and triggering do NOT count as casting), there is no cooldown. Each sacrifice produces its own separate effect, but only the strongest one applies at a time. The effect still applies to you after switching weapon set. Manastorm can drop anywhere. It can be chanced.
(5-10)% increased Spell Damage
(80-120)% increased Energy Shield
+(50-70) to maximum Mana
(30-50)% increased Mana Regeneration Rate
When you Cast a Spell, Sacrifice all Mana to gain Added Maximum Lightning Damage
equal to 25% of Sacrificed Mana for 4 seconds
Fear not the fury of the storm.
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