Increase the damage and Healing of Swarm by 8%, but reduce its duration by {scale=0.35|0.35}s.
Level 2
Wings of Terror
Death Wings
Increase the lateral movement of Death Wings by 18%.
Level 3
Blood Cannon
Armor
Increase extra Blood Health by 1000 while decreasing base Health by {scale=125|125}.
Level 5
Waning Moon
Blood Hex
Reduce the Blood cost of Swarm by 10% while an ally is marked by Blood Hex.
Level 2
Unholy Flight
Death Wings
Reduce your damage taken by 15% for 1.5s after activating Death Wings.
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%.