Tome of fire

The tome of fire is a book held in place of a shield that is a possible reward from a supply crate, which is obtained from subduing the Wintertodt. The tome of fire requires level 50 in Magic to wield.

The tome can be charged with burnt pages to act as a source of infinite fire runes whilst equipped. Each page adds 20 charges to the tome. It can hold 1,000 pages and requires to fully charge. Each charge costs.

Casting fire spells with the tome equipped will increase the spell's damage by 50% (multiplicative bonus on top of magic damage bonus) and consume one charge. Casting a non-combat spell requiring fire runes will not consume any charges.

Even though Iban Blast, Flames of Zamorak, and smoke spells are combat spells that require fire runes to cast, they will not consume charges, nor will they receive the 50% damage boost from the tome.

As of an update on 11 January 2018, empty tomes can be traded in for 100 burnt pages per tome (value of ) by speaking to Ignisia.

Trivia

 * In the Old School Content Poll #46, the tome of fire was proposed to have dragonfire protection as well, similar to an anti-dragon shield. It only received 56.7% votes in favour, 18.3% short of passing the poll.