Race

Troll

Voodoo Frenzy · levels at 2 / 4 / 6 different pieces

2
All allies gain +20 attack speed.
4
All allies gain another +50 attack speed (+70 total).
6
All allies gain +20 attack speed for each attack they land, for the rest of the battle, up to +120.
Note: The tooltip says up to 7 stacks. Because of a bug, only 6 stacks give attack speed, so the maximum is +120 rather than +140.

Official in-game tooltip

SPECIES TRAIT: Voodoo Frenzy
Active when you have at least (N) different pieces of this species on board. (Multiple effects stack)

(2) Trolls: Increases the attack speed of all allies by 20.
(4) Trolls: Increases the attack speed of all allies by 50.
(6) Trolls: All allies gain +20 attack speed for each successful attack. Maximum 7 stacks.

Savage trolls are notorious for their cruelty, dark occult religion, and fierce hatred of other races.