Reduce the Blood cost of Swarm by 20% while an ally is marked by Blood Hex.
Level 4
Blood Cannon
Armor
Increase extra Blood Health by 1000 while decreasing base Health by {scale=125|125}.
Level 5
Wings of Terror
Death Wings
Increase the lateral movement of Death Wings by 6%.
Level 1
Unholy Flight
Death Wings
Reduce your damage taken by 10% for 1.5s after activating Death Wings.
Level 2
Symbiotic Relationship
Swarm
Increase the Healing allies receive from Swarm by 12%, but increase its cost by {scale=4|4}%.
Level 3
Maelstrom of Carnage
Swarm
Swarm is now cast on yourself and follows you around instead of being placed on the ground, its ability cost is decreased by 25%, and its radius is increased by 30%.