My very first spell, Soul Shock (MUI)
Your hero deals damage to enemy units nearby every x seconds. This spell effect lasts a few seconds.Level 1 - Deals 20 damage every second to enemies within 500 range, and spell lasts 4 seconds.Level 2 - Deals 30 damage every 0.80 second to enemies within 575 range, and spell lasts 5 seconds.Level 3 - Deals 40 damage every 0.60 second to enemies within 650 range, and spell lasts 6 seconds.
Credits for BloodSoul for making this spell MUI
Credits for Dr Super Good for some help on the triggers.