Whenever this tower damages a creep, it has a 20% chance to electrify it for 5 seconds. Each second, all creeps in 225 range of the electrified unit take 900 spell damage.
Level Bonus: +0.8% chance +36 spell damage per second
Overcharge
Whenever this tower deals damage with its attacks or its other innate abilities it has a 25% chance to deal 900 spell damage to the damaged unit. Overcharge can trigger itself, but the chance to do so is decreased by 5% for each time it retriggers.
Level Bonus: +36 spell damage +1% chance
Lightmare
Summons a storm cloud which attacks units in 1500 range. Every 0.33 seconds the cloud attacks up to 3 targets with forked lightning. Each lightning deals 1300 spell damage. Lightmare lasts 10 seconds and does not benefit from buff duration.
Level Bonus: +52 spell damage
I Scale
This tower gains 1.66% spell damage, spell crit damage and 0.125% spell crit chance for each level the player survives.