True enough Hyp - the casting of a summon spell doesn't constitute an intended attack action. But IMO if the summoned creature (or ally) is directed to attack (or threaten) then that action breaks the line and casues the caster to become visible again. While if the summoned creature (or ally) just does what comes naturally to it it is not an intended attack.
A corrolary be the turn undead and cleric making a threatening move.
IMO it all depends on what the caster's intentions are.
A corrolary be the turn undead and cleric making a threatening move.
IMO it all depends on what the caster's intentions are.
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