|Invaders dampen 6 damage with Tribal spirit. (17 spirit lost).|
divyener deals 4 damage to Invaders.
Invaders dampen 32 damage with Tribal spirit. (91 spirit lost).
divyener deals 24 damage to Invaders with the Magic arrow spell. 1 perish.
That's not a bug, the reason for the low damage is the racial ability of tribals: Tribal spirit.
Tribal spirit points are also expended whenever creatures take damage to dampen that damage.
For Barbarian alternative classes, dampened damage equals [20% + (faction skill level)%]
For Tribals, dampened damage equals [50% + (faction skill level) * 2%].
Tribal spirit points lost equals [1200 * damage dampened / total current HP of stack].
As spirit points are cumulated, creatures pass to next levels of spirit, obtaining new abilities and improving certain parameters