spider starwalker's Datacrons

The first time each Dark Side ally is defeated, remaining Dark Side allies gain 15% Offense and 20 Speed for the rest of the encounter.

Whenever a Sith ally deals damage to an enemy and no other enemy is Marked, inflict Marked for 1 turn on the target enemy, which can't be evaded or resisted.

Whenever Dark Side allies are evaded by an enemy, that ally gains Accuracy Up for 2 turns, and they inflict Evasion Down for 2 turns on that enemy, which can't be evaded.

At the start of the encounter Dark Side allies gain 15% Max Health and Max Protection for each other Dark Side ally.