Direct answer
Summoning and progression checklist; see the linked creature for combat attributes. Optional: Next action: Strange Bowl Go to the location: Prison — Kall Fimbulbringer Defeat the target: Kall Fimbulbringer Defeat the target: Kall Fimbulbringer Possible drops: Crown Jewel / Sacrificial Blood
Kall Fimbulbringer · Challenge checklist

Result
Optional: Next action: Strange Bowl → Defeat the target: Kall Fimbulbringer
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