Staff of Spell Echoes

Staff, rare (attunement to a spellcaster required)

This staff of silvery metal is hollow and makes a gentle moaning sound when swung quickly through the air. The staff has 7 charges and regains 1d6+1 expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff loses its properties and becomes a nonmagical quarterstaff.

When you cast a spell while holding the staff, you can recapture some of the spell energy of the spell you have just cast by expending a number of charges equal to the spell’s level (treat a cantrip as level 1 for this purpose). On your next turn, you can re-cast the same spell without expending a spell slot. If you do not re-cast the spell on your next turn, the recaptured magic dissipates and the effect is wasted.