The Librarian is a fast-paced boss that relies on applying Burn and shuffling your party. He has two main phases: 'Reading' and 'Burning'. During Reading, he gains Block tokens and shuffles your party, while during Burning, he loses Block but deals heavy Burn damage. Your goal is to burst him down during his Burning phase. Heroes with high raw damage, critical hit chance, and Burn resistance are excellent. Skills that ignore Block or remove positive tokens are also highly effective. Be prepared for constant repositioning and heavy fire damage.

Key Strategy:
- Burst Damage: Focus high damage during the 'Burning' phase when he loses Block.
- Burn Resistance: Equip trinkets or bring heroes with high Burn resistance.
- Positioning: Be ready for party shuffles and have skills that work from multiple ranks.
- Block Removal: Use skills that ignore or remove Block tokens.