Phoenix Pyre is a notable Buffing Spell from the path of Fire, in that it has an effect that isn't completely fire-related: Extra Lives.

The spell is a Level 7 Alteration spell that requires 2 and zero Gems to cast. It does nothing until the caster dies; when they die, they perform an AOE 50 Death Explosion that does 10 Armor Piercing Fire Damage, Blink to a random tile on the battlefield, and resurrect with full HP. This can happen multiple times; the only limiting factor is that it can't happen while the caster has 100 Fatigue or more, and that each resurrection accrues 30 Fatigue, with an expanding d20 added to the total.

• The spell itself costs 20 Fatigue to cast, if you're at 2 or lower, plus Spellcasting Encumbrance; 3 makes it 10, and 5 makes it 5.
• Shapechanger always triggers first, if it can. Even an especially-gruesome hit will leave you with a minimum of 1 HP.
• Afflictions will remain.
• Certain Mage corps may have counters at this point, such as 4, 3, and 2 Mages being able to just steal your guy.
• On that note, 4, 3, and 2 Mages may have magical instakills, and the 3 option explicitly bypasses Extra Lives.
• Your caster may blow up your other Mages, if you're not careful with your scripting.