Count Dooku has 100% counter chance. In addition, whenever he attacks outside of his turn, he deals 30% more damage, gains 15% Turn Meter, recovers 15% Protection, and gains Critical Hit Immunity for 1 turn.
B1 can't score critical hits or be revived. B1 has no Protection, 1 Health, and 100 stacks of Droid Battalion, and can't be defeated or destroyed while they have Droid Battalion. When all stacks of Droid Battalion expire, B1 is immediately destroyed. B1 is immune to Damage Over Time, and their Max Health and Max Protection can't be increased.
When B1 takes damage, they dispel all debuffs on themselves and lose 8 stacks of Droid Battalion. At the start of B1's turn, they gain 3 stacks of Droid Battalion.
B1 is immune to damage from Lord of Betrayal in the Sith Triumvirate Raid.
Droid Battalion: Each stack grants B1 +2% Offense and all Separatist allies +0.5% Tenacity and Critical Avoidance
Yoda gains Tenacity Up, Protection Up (30%), and Foresight for 2 turns, then grants each ally every non-unique buff he has (excluding Stealth and Taunt) for 2 turns. Yoda grants himself +35% Turn Meter and an additional +10% Turn Meter for each other living Jedi ally.
