[RPG] Repair Spells/Infusions and “Constructs”

Funnily enough, works by RAW.

There is no prohibition of magical healing in construct traits, though some constructs are explicitly immune to magic except select few effects.

There is also no prohibition in the heal spell.

Technically, you can do it, but expect a heavy book thrown by your DM. He will also probably houserule it away, at least I personally would.

Note:

Can't remember anything on that in 3.5 either, though the description of Warforged contrasts the possibility of both special and positive-energy healing (emphasis mine):

As living constructs, warforged can be affected by spells that target living creatures as well as by those that target constructs. Damage dealt to a warforged can be healed by a cure light wounds spell or a repair light damage spell, for example, and a warforged is vulnerable to disable construct and harm. However, spells from the healing subschool and supernatural abilities that cure hit point damage or ability damage provide only half their normal effect to a warforged.

That leads one to the implication of impossibility of positive-energy based healing for a regular construct, even if it is not stated anywhere.

Unless the particular construct is described as not needing air - it needs air

In the Monster Manual p.6 it says:

Certain spells, magic items, class features, and other effects in the game interact in special ways with creatures of a particular type.

However, that is a feature of the particular "spells, magic items, class features, and other effects" on constructs - it is not inherent in constructs themselves.

Constructed Nature

Some constructs have this feature but it is far from universal:

Constructed Nature. An [X] doesn't require air, food, drink, or sleep.

So that is a feature of [X] in particular, not constructs in general.

Artificer

As currently written, the mechanical servant does not get Constructed Nature, so it needs air, food, drink and sleep.

Hence:

Playtest Material This character class is presented for playtesting and to spark your imagination. These game mechanics are in draft form, usable in your campaign but not refined by design iterations or full game development. This class is not officially part of the game.