Defensive Casting

1st-level abjuration (Artificer,Wizard)

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• Casting Time: 1 bonus action
• Range: Self
• Components: V
• Duration: Concentration, up to 1 minute

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You gain a +1 bonus to Armor Class against all opportunity attacks and all other attacks made as part of a creature's reaction. Each time you cast another spell of 1st-level or higher while concentrating on this one, the bonus from this spell improves. The bonus increases by a number equal to the level of the spell slot you used to cast the spell. While the bonus from this spell is +2 or higher, your spell attacks deal an extra 1d4 force damage on a hit.

At Higher Levels. If you cast this spell using a spell slot of 2nd level or higher, the initial bonus improves by +1 for each spell level above 3rd.