Ring of the Spellrager

Wondrous item, Unique, Requires attunement by a wizard

When you use this ruby ring as your spellcasting focus, your have a +2 bonus to spell attacks and spell save DC.

Spellrage. Twice per long rest, as a bonus action, you can enter a special arcane-powered rage that lasts for 1 minute. While raging, you gain the following benefits:

You are resistant to damage from spells.

Your non-cantrip spells that affect only one creature deal additional damage equal to the spell's level. (This damage is dealt only once for multi-hit spells.)

You may use Reckless Spell at will.

Once on each of your turns, if you take damage from an area-of-effect evocation spell you cast, your future evocation spells for the remainder of this rage deal +1 damage.

Your spellrage lasts 1 minute. It ends early if you are knocked unconscious or if your turn ends and you haven't cast a damage-dealing spell targeting a hostile creature since your last turn or taken damage since then. You can also end it as a bonus action on your turn.

Reckless Spell. When you cast an instantaneous evocation spell with an area of effect, you may impose disadvantage on one target of the spell. If you do, you have disadvantage on saving throws against spells until the start of your next turn. You can't use this feature on a spell if you prevent any targets from being affected by it, e.g. by sculpt spell. Once you use this feature, you can't use it again until you finish a long rest.