Increase the damage and Healing of Swarm by 8%, but reduce its duration by {scale=0.35|0.35}s.
Level 2
Waning Moon
Blood Hex
Reduce the Blood cost of Swarm by 25% while an ally is marked by Blood Hex.
Level 5
Symbiotic Relationship
Swarm
Increase the Healing allies receive from Swarm by 8%, but increase its cost by {scale=4|4}%.
Level 2
Overflowing Delights
Swarm
Increase the Radius of Swarm by 6%, but increase its cost by {scale=3|3}%.
Level 3
Sanguine Pact
Death Wings
Reduce the Cooldown of Blood Hex by 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%.