Tenacity Down is the key Debuff used across the full raid. While Ability Block and Buff Immunity do little specifically against the Rancor, they are invaluable for Phase 1 in keeping the side guards from taunting or gaining buffs from the captain.

Jyn needs high Potency and high speed secondaries to be of greatest use. Wedge and Biggs both need to have Critical Damage mods as well as high speed secondaries, preferrably above Speed. When joined with a Stealthed Teebo or another high damage dealer, turn meter can either be removed or just significant damage can be applied. QGJ also as the ability to Dispel on his Special ability Humbling Blowmaking him excellent to use, especially in Phase 1 where a taunting side guard could allow the captain to take several turns. Elder can also heal and cleanse Debuffs and revive toons should things start to go awry during the raid. Ewok Elder both gives and receives additional turn meter with Teebo.

His Special Ewok Scramble Tactics allows him to stay under Stealth for three turns and his Leader ability Guerrilla Warfare almost ensures that he is continually under Stealth.

Vader also applies Damage Over Time debuffs DoTs through his Force Crush Special ability that continually stack up and re-apply even after they expire. The goal with soloing the Heroic Raid is to complete the full raid with just a single team of characters. While throwing Gear 11 characters at the different phases of the Heroic Rancor could eventually finish off the rancor, there are some characters that work extremely well against the Rancor and should be utilized above all others.

Best mods for jyn