One thing that the OD&D rulebooks does not specifically state with any clarity is exactly how spell casting works in combat. There is no mention of it in the turn sequence given in Chainmail and of course, no turn sequence is provided in any of the three OD&D books so it seems to be left to the referee to decide how best to handle spell casting. The only rules provided that hold any kind of restriction over or clue regarding how spell casting works in regards to the turn sequence is on page 32 of Chainmail, which states "In order to cast and maintain any spell, a Wizard must be both stationary and undisturbed by attack upon his person." As well as Page 11 of Men & Magic, which states "Dexterity applies to both manual speed and conjuration. It will indicate the character's missile ability and speed with actions such as firing first, getting off a spell, etc." This latter rule is quite vague. Spell Casting & Spell Complexity in OD&D - An Ol
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