The beholder might have failed its save anyway, but you misread the spell. A save of "Will negates (object)", doesn't mean that there's no save for creatures. It means that a will save negates the effect (for any target), and the spell is capable of targeting objects. From the PHB, p.177:Henry said:In our Eberron game, a single Anti-Magic Ray spell (from Spell Compendium) enabled ONE character to take out a beholder by himself.
The PC ran into an arc not covered by the AM eye of the beholder, and shot him with an Anti-magic ray. There's no saving throw, unless you target an object. The beholder tried to fly away (since it was less than useless in a 13th level battle) but the same PC summoned a pair of celestial giant eagles, and RIPPED HIM APART. By themselves.
I'd say that, given the 13th level characters out there, that the "tilt and pan" trick is not too overpowered for what the beholder is up against.
"Negates: The spell has no effect on a subject that makes a successful saving throw."
"(object): The spell can be cast on objects, which receive saving throws only if they are magical or if they are attended ... (This notation does not mean that a spell can only be cast on objects. Some spells of this sort can be cast on createures or objects.)"