Trigger

You store a spell inside an object or creature that activates when triggered.

You cast this spell by casting Trigger and the spell you want to store at the same time (for instance if you were storing a spell of fireball inside a hat you would use one first level spell slot AND one third level spell slot). Later you can use your action or reaction to activate trigger which casts the spell(s) that have been stored. You can store as many spells as you want however you cannot gain spell slots by resting until Trigger is no longer active. You can spend ten minutes to dispel all Triggers or one hour to dispel one certain trigger. Treat dispelling as you would a ritual. If you enter an antimagic zone the Trigger activates without your control however if an item effected by trigger enters an antimagic zone trigger is dispelled from that item. If you cast Trigger on an item as a Ritual then you only need to cast the spell you want to add.