This is a much needed change because right now we get an exception for Extinguish, but soon we will need another one for Defrost and so on.
Current text:
Immunity
This object is immune to all attacks, damage, conditions, and effects of the specified damage type, including critical damage and direct damage. It cannot be targeted or affected by spells or attacks of the specified type.
The first sentence is completely useless. Immune is not defined, so saying the object is immune is useless... We are into the immunity description. It is like if the dictionary was describing an apple by saying: "An apple is an apple".
What it need to be to keep the same effect, but to allow to target the object to prevent all this kind of non-sense is that:
Immunity
This object can't get damaged, can't gain condition and can't be affected by effects of the specified type.
If this would be written like this, this would solve 99% of the problems and non-sense situations. The remaining 1% are these spells:
Charm, Mind Control, Pacify, Rust, Dissolve and Explode.
Dissolve and Explode, for the moment are not problematic, but if they ever make a Mage Immune to Acid (holyshit it would be OP) or Flame (would be OP as hell too), this would cause problem. But on the other end, this would actually be a good thing, because I don't think a Mage Immunity should prevent its equipment to be affected by this kind of spell.
Charm, Mind Control, Pacify are problematic because they would require an errata stating they can't target psychic immune creatures.
Rust might or might not be a problem, it all depend if future Acid Immune creature would all be Resilient or not. If not, it would require an errata to specify that it can't target acid immune creature.
The other spell with a type that something can be Immune to are not problematic because they either deal damage or add condition markers, which the description already deal with.
What do you think about it?
I know Arcane Wonders are not fond of errata, but we are playing a competitive game and all competitive game have errata and rule updates (Magic, X-Wing, etc). It is a part of these kind of game. It is a game that evolve and players need to keep up with these kind of changes for the better of the game balance and consistency.