So I've been looking for a while to find a concrete way of calculating an item that activates multiple spells simultaneously. I understand the game mostly seems to avoid this but every power has a price.
Only real example I've found is the Snapleaf, that items cost is 750 gp. As a single use item that simultaneously grants the user Invisibility (Lvl 2 spell minimum caster of Lvl 3) and Feather Fall (lvl 1 spell minimum caster of lvl 1).
My attempt at Calculating that based on the magic item creation charts was as shown
Single Use (Spell level x caster level x 50) 1 x 1 x 50 & 2 x 3 x 50
Adding the two spells together still just comes out as 350. So taking into account the simultaneous casting of the spells, the cost is another x2.15 (rounded).
Mostly looking for if there is a concrete cost.
My end goal is for my wizard to have a sort of charm bracelet for when combat hits without warning. So I'd be looking to have a 1/per day casting of what could be a number of spells (mostly thinking level 1 spells) I know that things like Mage Armor or Shield bring in the whole AC based costs so lets assume we're excluding those type of buffs.