Automatic counterspelling talisman

[Berengar]

@VimWabbit

I do remember some bell enchanted with 'Hearing' to detect magic of some sort and trigger something in one book, therefore the InVi +2 mags reference. However this item has 'Hearing' as Target and valid for detection, thus the item can hear; should then not ralufs item, talisman or no, able to detect fast incoming wood on its own and... set them on fire very very rapidly?

We had that here: no need to repeat it. An explicit rule from ArM5 is more trustworthy than an instance from MoH, isn't it?

@VimWabbit

And by this should not an item enchanted to detect magic at said hearing and linked triggers be able to do the same, arrow or spell... they are both fast approaching;

ArM5 Hermetic spells usually affect their targets instantaneously, once they are cast: no fireballs racing over the battlefield to and from, and no instances of mind control searching for their targets. ArM5 p.155 Wielding the Invisible Sling instantaneously grabs the intended mundane projectile - and then takes a little time to hurl it: this is due to its specific design.

@VimWabbit

Combine this that when using fast cast defense, maybe a mastered spell even, against incoming Mojo, has that spell then not come into effect?

Read this all up again in ArM5 p.83 Fast Casting: while your opponent still casts his spell, you first derive its basic characteristics with magical knowledge and observation, and second fast cast your defense. So your defense spell might be up at the moment your opponent has completed his spell.

Cheers