Sharize's Charm of Differential Etherealness

In a recent episode of the podcast, we go through the process of making up a spell that was given to Walt's wizard after a chance encounter with a high-ranking mage. This is that spell, designed for Pathfinder 2e.

Sharize's Charm of Differential Etherealness

Two-Action Activity, Spell 3
Traits manipulate
Traditions arcane
Range touch
Targets one specific object or type of object
Duration Eight hours

Touch one object. Speak the name of another object or class of objects. For the duration, the second object (including anything contained within or on it) can pass through the first object as if the first were incorporeal.

If the spell ends while the second object is within the first, both objects take 4d12 force damage, and the second object is pushed 5 feet from the first object in a random direction.

Heightened (4th) The duration is unlimited, but you must expend 10 gp worth of precious metals as an additional cost.