[Altered Melee] Help me polish my Firelord

[Hive_Parasite]

So on one of my upcoming maps, I replaced Soul Burn with a skill called Flame Cloak (base for it is Lighting Shield).

Current values are 20/25/30 damage for 100 mana and 10/8/6 cooldown. Duration is 20/25/30 seconds.

Targets allowed are Ground, Friend, Enemy, Neutral

Is this balanced as it is or do I need to change the numbers around?