Craft Contingent Spell

You know how to create contingent spells, which are semi-permanent spells that can be "worn" and activate under certain conditions.

You can make a contingent spell of any spell you are capable of casting without the aid of items. Crafting a contingent spell takes two hours per level of the spell, and crafting it costs half the value of a spell scroll containing a spell of equal level. This cost is in addition to the cost of any material components the spell may require. A contingent spell functions identically to the contingency spell with the exception that its duration is indefinite, or until its contingency is met. The spell is worn, and manifests as a slightly incandescent series of arcane sigils floating just above the skin of the creature wearing it. Once equipped, a contingent spell cannot be passed from one creature to another, and only disappears if activated or dispelled (DC 10 + the casters casting score). If the creature dies, the spell remains active and will activate if its contingency is met; however it may be assumed by a new creature if the previous bearer's body isn't present. A creature can wear a number of contingent spells equal to their constitution modifier (minimum of one).