Going berserk in combat is such a chaotic thing (small "c" chaotic, of course) that it seems like a perfect place to stick in a random table.
I thought about making a random berserking table for the barbarians in Blood & Treasure Second Edition, but space constraints and a desire to avoid excess dice rolling (I know, for some there cannot be enough) I didn't. Still, I wrote it, so I might as well get it out there!
Berserkergang
Roll 1d10 and add your barbarian level (or half your fighter level, if your GM swings that way). You may roll once for the combat, or roll each round, with the effect lasting for that round and then ending.
d10
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Effect
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1-6
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+1 to attack, +2 to damage; +1d6 damage vs. non-humanoids
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5-11
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+1 to AC, +2 to all saving throws
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12-15
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Two attacks each round
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16-18
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+2 to attack, +4 to damage; +2d6 damage vs. non-humanoids
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19-20
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Immune to fear and spells of 2nd level or lower; +1d6 damage to spell casters
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21
|
Opponents must save or be frightened
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22
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Continue fighting after reaching 0 hit points; save vs. death at end of combat or die
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23
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Immune to spells of 5th level or lower; +2d6 damage to spell casters
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24
|
Three attacks each round
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25
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Roll twice, combine results
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While berserk, you cannot cast spells, make ranged attacks (other than throwing things), retreat from combat, make or follow complex plans, stop attacking a foe until you or it are dead, and when you kill one foe you must move on to the next closest foe.