Crothian
First Post
This is why you should always have Contingency: Swarm of Kittens. They'll do a great job of triggering those symbols...
Are you trying to get killed by the Catlord?

This is why you should always have Contingency: Swarm of Kittens. They'll do a great job of triggering those symbols...
This is why you should always have Contingency: Swarm of Kittens. They'll do a great job of triggering those symbols...
I'm certain this has been addressed before in these forums. I tried the search function here but it it wouldn't let me use it.
Strictly by RAW, it seems you can. 3e allows the spell to be cast on a surface (including a doorway).
I suspect, though, this may be a loophole they forgot to specifically rule out. They did specifically rule out putting it on a weapon and striking with it ("You can’t use a symbol of death offensively"). The fact that it has specific rules for use as a trap also suggests to me it was intended to be used as a trap, not on a mobile device.
Out of curiosity, I decided to check older versions of the spell.
The 2e arcane spell allows it to be cast "on a surface or a portal" (portal in the broader sense which includes mundane doors). The divine version allows it to be cast "on a surface or in the air", making it useful in different ways.
The 1e divine spell "air or any surface". The 1e arcane spell could only be cast on a portal.
The Rules Cyclopedia ("BECMI") says "The rune may be placed on an object (such as a door or wall) or placed in mid-air. The rune cannot move; if placed on a creature or moving object, it will remain at that point when the surface moves (possibly floating in mid-air)."
So, did the RC intentionally narrow the spell, or just clarify an unintended loophole? Was it sloppy writing from 1e that carried through? Was it originally intended to allow it to be cast on a mobile object? Unfortunately, the guy who originally wrote it is no longer with us. Interestingly, older versions allowed the spell to be cast in mid-air, which 3e dropped.
Wizard, Ranger, Cleric with the right domain, Druid, Bard.