Summons a swarm of bugs for 5 seconds. Enemies within the swarm take 32 / 48 / 64 / 80 Physical Damage per second, while enemies outside the swarm deal 40% less damage to Tremble.

Create and tunnel through Terror Mounds with Boris. A Terror Mound spawns at your ally Well once leveled. Terror Mounds grant 15 / 30 / 45 / 60% Move Speed, 50% Mana Regeneration, Unitwalking, and Stealth with a 2 second fade time. Also gain the ability to Terror Port between Mounds.

Maximum of 2 / 4 / 6 / 8 Terror Mounds.

Passively makes your autoattacks apply a 10 / 20 / 30 / 40% Movement Speed Slow and -1 / 2 / 3 / 4 Armor to the target for 2.5 seconds.

Summon Shudder at your location for 40 seconds. Shudder is invulnerable, cannot be controlled and follows Tremble, attacking what Tremble attacks for 60 / 90 / 120 Attack Damage.

For 40 seconds, Hive Mind becomes Ensnare. This can be activated to Immobilize a target enemy unit for 1.5 / 2 / 2.5 seconds.

Staff of the Master spawns a permanent, controllable Shudder with 90 / 120 / 150 Attack Damage, 1000 / 1400 / 1800 Health, Ensnare, Terror Mounds, Impalers and Razor Carapace (30 Deflection).

+2 Strength
+2 Agility
+2 Intelligence