As far as I know, the magic items of said Frenzied Berserker will be shut down by an
Anti Magic Ray.
[EDIT]I stand corrected. I just checked
Anti Magic Ray, and it is target specific, not an area. Their equipment is explicitly excluded from the effect. [/EDIT]
Under the general description for AntiMagic, it says that only Epic items and spells, and deities operate inside one. No spells, no spell-like abilities, no items, and few if any spernatural abilities.
SRD said:
ANTIMAGIC
An antimagic field spell or effect cancels magic altogether. An antimagic effect has the following powers and characteristics.
• No supernatural ability, spell-like ability, or spell works in an area of antimagic (but extraordinary abilities still work).
• Antimagic does not dispel magic; it suppresses it. Once a magical effect is no longer affected by the antimagic (the antimagic fades, the center of the effect moves away, and so on), the magic returns. Spells that still have part of their duration left begin functioning again, magic items are once again useful, and so forth.
• Spell areas that include both an antimagic area and a normal area, but are not centered in the antimagic area, still function in the normal area. If the spell’s center is in the antimagic area, then the spell is suppressed.
• Golems and other constructs, elementals, outsiders, and corporeal undead, still function in an antimagic area (though the antimagic area suppresses their spellcasting and their supernatural and spell-like abilities normally). If such creatures are summoned or conjured, however, see below.
• Summoned or conjured creatures of any type, as well as incorporeal undead, wink out if they enter the area of an antimagic effect. They reappear in the same spot once the field goes away.
• Magic items with continuous effects do not function in the area of an antimagic effect, but their effects are not canceled (so the contents of a bag of holding are unavailable, but neither spill out nor disappear forever).
• Two antimagic areas in the same place do not cancel each other out, nor do they stack.
• Wall of force, prismatic wall, and prismatic sphere are not affected by antimagic. Break enchantment, dispel magic, and greater dispel magic spells do not dispel antimagic. Mage’s disjunction has a 1% chance per caster level of destroying an antimagic field. If the antimagic field survives the disjunction, no items within it are disjoined.
Now, oddly, you can cast some spells through an AntiMagic effect. Some are specifically designed to be cast into them.
Any Area of Effect spell, such as
Lightning Bolt or
Cone of Cold cast will affect areas outside the AntiMagic normally, so long as the point of origin for the spell is outside the AM area as well.
One minor abuse of this might be: Caster is standing 75 feet (15 squares) away from a Beholder or other creature using an
AntiMagic Ray (either as the spell or the natural ability). Since these versions of AntiMagic have a 60 foot range, the caster is outside the area itself, so they throw
Lightning Bolt. The LB spell is an Area of Effect. It's suppressed within the AntiMagic effect itself, but works normally both before and after that AntiMagic area. The Beholder or caster of the AMR is not actually inside their own AntiMagic area, so... ZZZAAAPPP!
There is debate about Line of Effect on tricks like this, so consult with your DM first. AntiMagic never says it interrupts Line of Effect, but many believe that it does/should.
Instantaneous Conjurations effects can affect creatures or objects inside an AntiMagic field, so long as the Conjuration itself takes place outside.
For example, a Wall of Iron could be cast outside the field, then allowed to topple on someone inside.
More directly, there are several of the Orb spells that conjure Acid, Lightning or whatever in the caster's hand and then project it at a target. The acid (or lightning or whatever) isn't considered "magical" once conjured, any more than the
Wall of Iron is, and so will continue to exist within the AntiMagic area.
Even the Cantrip
Acid Splash will work this way, for exactly the same reason: The spell Conjures the acid, then sends it. Duration is Instantaneous, so the acid, once conjured, is "real".