Damage taken divided by 5 is the amount of mana back you recieve. Rounds downwards.
example:
You take 100 damage, you gain 20 mana back.
You take 104 damage, you gain 20 mana back.
You take 105 damage, you gain 21 mana back.
Does not stack with Shock Spikes. They will overwrite each other.
Stacks with Punishing Barbs.
