CR 20 Boss to an Level 7 party
So, i am writting this just as the session ended, and the DM told us that the Boss that we will face next session
Her name is Eloisa Daeremund, first of the six calamities, royal bloodfiend, a summoner boss, who will summon previous enemies that also have their own broken mechanics
Our party consist of: Me as a Lore Bard, our Gloomstalker Ranger, our Redemption Paladin and the resident Min Max Warforged Warlock
We have some magic items, we had overcome a array of challenges with strategy and some good rolls, but the session ended and i can't think a way to kill this boss quickly, because our DM told us "when this creature's HP drops to 0, if its AC it's highier than 20, heals 152 HP and its AC drops by 1" LIKE, WHAAT??? HOW ARE WE SUPPOSED TO DO THAT MULTIPLE TIMES??? I KNOW FOR A FACT THAT HER AC IS HIGHIER THAN 23, EVERY ENEMY WE FACED IN THE LAST 15 SESSIONS HAD 20+ AC, WHAT ARE WE SUPPOSED TO DO????
Sorry for the spelling mistakes, i am frustated with this