theeffect of spells– this means you can’t interrupt a ritual or spell being cast, and you can’t target an instantaneous spell as the effect has already been resolved (you’re better off withCounterspell 5efor that). You also can’t target the effects of magical items or innate ...
Identify (Bard, Wizard) lets you learn the properties of magic items (so you can use them). Shield (Sorcerer, Wizard) gives you +5 to your armor class for 1 round as a reaction. Shield of Faith (Cleric) gives you +2 to your armor class for up to 10 minutes. Which classes get th...