Some magic items allow the user to cast a spell from
the item. The spell is cast at the lowest possible spell
level, doesn't expend any of the user 's spell slots, and
requires no components, unless the item's description
says otherwise. The spell uses its normal casting time,
range , and duration, and the user of the item must
concentrate if the spell requires concentration. Many
items , such as potions, bypass the casting of a spell
and confer the spell's effects, with their usual duration.