10% chance to gain Arcane Surge when you Kill an Enemy
10% increased Effect of Arcane Surge on you per
200 Mana spent Recently, up to 50% 
Arcane Capacitor is a notable passive skill that grants increased maximum mana and a chance to gain the Arcane Surge buff on kill. It also grants increased effect of arcane surge per 200 mana spent recently upto a maximum.
Note that the arcane surge buff granted on kill is equal to the buff granted from a level 1 Arcane Surge SupportArcane Surge SupportSupport, Spell, Duration
Mana Multiplier: 130%Each supported spell will track how much mana you spend on it, granting a buff when the total mana spent reaches a threshold. Cannot support skills used by totems, traps, or mines.Per 1% Quality:
Supported Skills deal 0.5% increased Spell DamageArcane Surge grants (10-20)% more Spell Damage
Arcane Surge grants (10-19)% increased Cast Speed
Arcane Surge grants (0.5-1)% of Mana Regenerated per second
Arcane Surge lasts 4 seconds
Gain Arcane Surge after Spending a total of (15-400) Mana with Supported Skills
Supported Skills deal (10-19)% more Spell Damage while you have Arcane SurgeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Active Skill Gem you wish to augment. Right click to remove from a socket..