youll replace some of the current staffs anyway. they wont stay useful all the way till the end due to the way progression works. for example the fire staff wont be all that useful in the ashland as its mostly FIRE based for the enemies.

the summoned skeletons arent all that useful due to terrian issues to begin with and they are already MAXED out right now unlike the elemental staffs which have yet to get 2 more upgrades in the future.

the bubble staff. the oddball one. pretty much required if you wanna go full mage.

but given there is only 2 biomes left anyway i doubt that many tools will get released for magic to begin with.

its a choice for the player according to the devs. you can go full magic. you can also just use only 1 staff.

if you could cast everything without a tool magic would be grossly OP. and its already strong right now.