Bloodfang the demon walker

Bloodfang

health: Health Regen: 500.9(+60 per level) 4.5(+3.9 per level) Attack Damage: 54(+9.0 per level) Armor 23.9(+4 per level)

Attack speed Magic resist 0.90 (+2% per level) 20.5(1.9 per level)

Movement Speed 375

So the champ has a passive that works around the games timer so 10 minutes in game the passives has a 70% to go off and it switches between 40% and 70% which is devils blood as his passive which gives him 160 extra added damage to basic attacks (can't be use on same target no more then three time but half each hit)

Q. Passive: gain 10 added damage for each champion killed by Bloodfang

   Active: deals 200(% of max health)(added damage) if kills enemy champion this skill is half of cooldown (cooldown 60 seconds)

W. Active: Places down a warp in a target location (must be near location) can be reactive at second location (must be near it) (cooldown 120 seconds)

E. Active target is slowed by 50% movement speed deals 150(added damage) to target and 3 other targets (priority champions) (cooldown 100 seconds)

Q. Active creates a hole in the ground that roots target for 3 seconds also deal to enemy champions 500(+ad)(+ap) reduce by half round down for each extra champion past one

 Passive upon cooldown any enemy champions killed by bloodfang reduce the cooldown of other abilities by 10%

still working on his background tell me if this is under powered or is not or even if it is balance