Summoning Bellanoir, the Level 30 Dark raid boss? There's no map pin for this one. You bring the fight to your base via a Summoning Altar, and the clock starts the moment it lands. Below: how to summon it, why Dragon damage is the play, what it drops, and a fight plan that beats the timer.
Bellanoir is a raid boss, so there's no map pin. Bellanoir's Slab (4 fragments from dungeon chests) at a Summoning Altar
Bellanoir is Dark, so lead with Dragon damage and you'll carve through its health bar fast. Reliable picks: Jetragon, Astegon. Pack a bow or firearm too, since poking from outside its attack range beats trading hits up close.
Use the free Palworld Breeding Calculator to see every pair that makes the Pal you want, or what Bellanoir can breed into.