Random question: would this passive be 100% OP, or situationally OP dpending on the kit?
Passive: Balance of powers When HP is reduced to 0, champions HP pool enters "negative". When the negative HP equals max HP, the champion dies. When mana is reduced to 0, champions mana enters "negative". When the negative mana equals maximium mana, the champion dies.
While HP and mana are positive, champion gains +20% damage reduction, and 0.5HP/5 per level. While HP or mana is negative, champion takes 20% increased damage, and gains 0.5/5 of the negative per level. While both HP and mana are negative, champion takes 40% increased damage and gains the effects of ghost.