Rules edition: D&D 5e (2014 rules): legacy Fire Genasi from the Elemental Evil Player’s Companion and the 2014 Wizard. This guide does not combine those rules with the revised Fire Genasi in Mordenkainen Presents: Monsters of the Multiverse or the 2024 Wizard.
A Fire Genasi Wizard can pair a durable heritage with a flexible spellbook. The legacy species adds Constitution and Intelligence, gives fire resistance and darkvision, and provides two fire spells through Reach to the Blaze. The combination works best when you use those benefits as useful extras while still playing a Wizard: Intelligence drives your spellcasting, and positioning and control keep you safe.
Use the legacy Fire Genasi traits
The Elemental Evil Player’s Companion Genasi has a +2 Constitution increase. Its Fire subrace adds +1 Intelligence, 60-foot darkvision that shows darkness in shades of red, resistance to fire damage, and Reach to the Blaze. This is not fire immunity: resistance reduces fire damage you take, but you can still be hurt by fire. The later Monsters of the Multiverse Fire Genasi is a separate revised option with a different ability-score rule and spell package. Choose one printing and use all of its traits consistently.
Reach to the Blaze gives you the produce flame cantrip. Starting at character level 3, you can cast burning hands once with this trait as a 1st-level spell, and regain that use when you finish a long rest. Constitution is the spellcasting ability for these racial spells. The legacy trait does not grant flame blade; that spell appears in the later Fire Genasi version. A free racial casting does not use a spell slot, but otherwise follows the spell’s rules. Produce flame uses a ranged spell attack when you hurl it, and burning hands still takes an action and calls for a Dexterity saving throw.
Build around Intelligence and Constitution
Intelligence determines your Wizard spell attack bonus and spell save DC, and helps determine how many Wizard spells you can prepare. Constitution improves hit points and concentration saves. Dexterity adds to initiative, Dexterity saves, and AC when you use mage armor or no armor. Wizards are proficient in Intelligence and Wisdom saving throws, not Constitution, so a high Constitution score does not give you saving-throw proficiency.
One 2014 point-buy example before applying legacy species increases is Strength 8, Dexterity 14, Constitution 13, Intelligence 15, Wisdom 12, and Charisma 10. After +2 Constitution and +1 Intelligence, that becomes Strength 8, Dexterity 14, Constitution 15, Intelligence 16, Wisdom 12, and Charisma 10. This reaches the usual Intelligence target while starting with a solid Constitution. If your table uses Tasha’s optional origin rules, you can reassign the legacy ability-score increases; confirm that choice before using the fixed-score example.
Mage armor sets your AC to 13 + your Dexterity modifier for eight hours, but it uses a 1st-level spell slot and does not stack with armor formulas. You can also prepare shield for a reaction defense and misty step for an emergency escape once you can cast 2nd-level spells. These tools remain relevant even when a particular campaign has few fire-using enemies.
Choose a school for the campaign
The 2014 Player’s Handbook offers several Arcane Traditions at Wizard level 2; other books add further options. The examples below focus on how the features work rather than promising a single best school.
- Evocation: Sculpt Spells helps protect chosen allies from the effects of many evocation spells you cast using spell slots. It supports area spells such as fireball, but your own fire resistance is not permission to ignore allies, positioning, or the spell’s other effects. Potent Cantrip, gained at 6th level, lets a creature that succeeds on its save take half damage from your damaging cantrips that would normally deal no damage on a successful save.
- Abjuration: Arcane Ward creates a separate magical ward when you choose this tradition at 2nd level. It has hit points equal to twice your Wizard level plus your Intelligence modifier (minimum 1), and can absorb damage that would hit you. It is not temporary hit points. Casting a 1st-level-or-higher abjuration spell restores ward hit points, up to its maximum. The ward adds defense without changing your armor or fire-resistance rules.
- War Magic: From Xanathar’s Guide to Everything, Arcane Deflection can use your reaction to add +2 AC against one attack or +4 to a failed saving throw. After you use it, you can cast only cantrips until the end of your next turn. Durable Magic at 10th level grants +2 AC and saving throws while you maintain concentration on a spell. Those defenses do not grant fire immunity.
- Divination: Portent gives you foretelling dice after a long rest, which you can use to replace certain d20 rolls made by you or a creature you can see. It offers broad control that works regardless of damage type or Fire Genasi features.
Use fire spells with a backup plan
Fire-themed spells can fit the character, but many creatures resist or are immune to fire. Keep options that deal other damage types or control the battlefield, such as magic missile, web, hypnotic pattern, and counterspell, depending on your spellbook and campaign. Fireball can be cast in an area that includes you, but resistance does not make that safe: you still take damage after applying the spell’s save and resistance rules, and nearby allies may be caught in the blast.
Elemental Adept (Fire) is an optional feat that lets you treat a 1 on a fire spell’s damage die as a 2 and lets your fire spells ignore resistance to fire. It does not bypass immunity, and it does not apply to every source of fire damage. Compare it with an Intelligence increase, which improves your spell attacks, save DC, and preparation capacity. War Caster can help with concentration and has a limited opportunity-attack spell option; Resilient (Constitution) can grant Constitution-save proficiency and raise an odd Constitution score. Feats are an optional rule that replaces an Ability Score Improvement when the DM allows them.
Roleplay without narrowing the character
The legacy Fire Genasi traits can inspire a character who studies magic to understand their elemental heritage, but the rules do not require an impulsive temperament or a particular relationship with fire. Your character could see their ancestry as a source of pride, a difficult inheritance, or simply one part of a larger identity. The Wizard’s spellbook, mentor, research question, or school can provide a personal reason to adventure that is separate from the species’ elemental theme.
In a party, use darkvision for exploration, resistance when fire damage actually appears, and your racial spells when they fit the moment. Burning hands is a close-range cone, so use it when you can avoid catching allies; it is not automatically stronger than a Wizard spell slot. Produce flame gives you an at-will option, but it is still fire damage and uses Constitution for its attack. Treat these as extra tools, not as a reason to stand in danger or prepare only fire spells.
Official Rules Sources
- Elemental Evil Player’s Companion: legacy Genasi and Fire Genasi traits
- Mordenkainen Presents: Monsters of the Multiverse: revised species reference
- D&D Basic Rules (2014): Wizard class
- D&D Basic Rules (2014): spell descriptions and spellcasting rules
- D&D Basic Rules (2014): feats and multiclassing options
- Tasha’s Cauldron of Everything: optional origin rules
- Xanathar’s Guide to Everything: War Magic tradition
- 2024 Basic Rules: revised Wizard rules for comparison
