When the boxed series of D&D rules was published, starting with the Beginner's Red Box in 1983, TSR did a sloppy job of editting the existing rules which, according to sources on the Mystara Mailing List, were already in their third edition. Several important rules which had appeared in the 1981 edition (the third?) were lost. This page will be used to attempt to document these lost rules. The rules will be restated to avoid copyright infringement.

• Healing by resting

  Basic Rulebook '81 p.25: Wounds are healed either by resting or magic. To heal by resting the creature must relax in a safe place and do nothing but rest. Each full day of rest heals 1d3 hp. If the rest is interrupted, no healing occurs.

• Acid damage

  Basic Rulebook '81 p.29: Acid is a special attack of gray oozes and ochre jellies. (Editor's Note: monsters detailed in the Expert Rulebook may also use this attack form.) The first rolled hit means the acid has reached the skin. No additional rolls to hit are made. Damage continues automatically until the victim is no longer in contact with the monster and the acid is removed by washing with water or wine. However, the acid Breath Weapon of a black dragon only causes damage for one round.

• Spell disruption

  Expert Rulebook '81 p.11: A spell is interrupted and lost if the caster loses initiative and is damaged or fails a saving throw.

• Damage to equipment

  Expert Rulebook '81 p.24: Normal equipment is destroyed when a character is killed by a special attack. The DM may let magic items save as the character and may also allow the item's plusses to apply to the saving throw.