TEXT: TRM1: TROLL MUTATIONS
  Type/Descriptions
  chameleon ability 
  blends into surroundings; surprises on a 1-3 on 1d6
  cycloptic 
  no depth of vision (-1 penalty on all “to hit” rolls)
  diseased bite 
  save vs. poison or  be infected by leprosy-like disease*
  extra arms (2) 
  2 extra attacks per round: claws (1d4+4 ea.)
  extra head 
  1 extra bite attack per round (must be made vs. same opponent as ﬁrst bite); +3 bonus to all surprise rolls
  gaseous breath 
  in lieu of bite attack — 3' diameter breath cloud (save vs. poison or fall unconscious 2d4 turns)
  gaseous attack 
  1 extra attack per round: gaseous attack from back end; all in 10' radius must save vs. poison or suffer -1 “to hit” for d6 turns
  gaze attack 
  all looking upon troll must save vs. paralysis or stand stunned in fear for 1d4 turns
  generates electricity 
  +1d4 points of electrical damage to each claw and bite attack
  glows 
  generates light equal to candle; +3 to all victims’ surprise rolls
  increased regeneration 
  roll 1d3 (once per creature, not per round); result=additional hp regained per round during regeneration
  increased speed 
  roll additional 1d3 [1=move:15; 2=move:18; 3=move:24]
  larger-than-normal 
  roll 1d6 (once per creature), multiply result by: additional 1+1HD, and +1 STR bonus to all attacks 
  leaping 
  able to leap 6' in a single round (to clear a maximum height of 8')
  limited vision 
  does not possess infravision
  partial carapace 
  -3 AC bonus vs. attacks from behind
  poisonous bite 
  save vs. poison or die in 2d4 turns
  precognition 
  +1 to all saving throws, “to hit” rolls, and surprise rolls; -1 AC bonus
  quills/spines 
  3d6 total spines/quills; up to 3 additional attacks per round: quills (1d4+1 ea.); regrow at a rate of 1 per turn
  “reversed” regeneration 
  does regenerate ﬁre damage, but does not regenerate cold damage (does not regenerate acid per standard troll)
  scaly skin 
  roll additional 1d3 [1=light scales (-1 AC bonus); 2=medium scales (-2 AC bonus); 3=heavy scales (-3 AC bonus)]
  sluggish 
  movement of 9 (instead of normal movement of 12)
  sonic attack 
  bite attack may be replaced by shrieking attack; all in 30' radius vs. save vs. paralysis or be stunned with fear 1d4 rounds
  spider climbing 
  able to climb on all surfaces, equal to standard movement; +2 to victims’ surprise rolls on attacks from above
  spit attack (acid) 
  on successful “to hit” roll, does 1d4 per round until washed off; hits eyes and blinds permanently on natural 20 “to hit” 
  tail, standard 
  1 extra attack per round: tail swipe (1d6+2)
  tail, prehensile 
  1 extra attack per round: tail swipe (1d6+2) or weapon (by weapon type +2 damage from STR bonus)
  teleportive ability 
  may "blink" up to 30' distance, once per turn
  thin-skinned  
  +1 AC penalty
  weak 
  -1 point of damage per attack form (due to low STR)
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  * wounds do not heal, regardless of source, until removed by cure disease spell; fatal in 3-6 months if left untreated; 1 pt. of CHA lost week’s duration of the disease)
  “d30 Troll Mutations”: © 2014, New Big Dragon Games Unlimited
  d30 Troll Mutations
  
SOURCE: textdata/thevault/OSR Generic/Old School Adventures D30 Accessories (OSR)/NBD d30 Encounters; Generators/d30 Troll Mutations (OSR).pdf