So in my world there is a new artifact that is similar to the Staff of the Magi. Except that it has druid spells in it. I'm calling the Staff of Elemntal Might. Currently it is broken u nto five wands that are scattered across the continent. One for fire, earth, water, air, and sun. Each wand has the 3rd level spell from that particular domain. (i.e. Fireball for fire, Water Breathing for water etc...) But they have a special ability. They have the ability to recharge. (i.e. leave the wand of fire in a firepit it will recharge 1 charge per hour etc...)
When all the pieces are put back together they make the Staff of Elemental Might. It gives the wielder the ability to cast all of the domain spells in the 5 nature domains(Fire, Earth, Water, Air, and sun) once and then needs to be recharged, via absorbing the spell (like a staff of the magi) or by taking it to a place that is rich in nature magic. (like a fairy circle) It recharges at a rate of 1 spell per day of the level of the spell. in other words it takes 8 days to recharge an 8th level spell. however it charges the lower level spells first.
Is this artifact too powerful?