I’m playing an artificer for the first time and trying to decide whether or not to use an infusion for the homunculus servant. But I’m wondering about the channel magic ability. It says
The homunculus delivers a spell you cast that has a range of touch.
I’d like to know if I can use a spell with a range of self in place of a spell with a range of touch.
As far as I understand it, broader ranges are inclusive of smaller ranges, so if you can cast a spell at sixty feet, you can also cast it at fifteen feet because fifteen feet is closer than sixty feet. And if you can cast it at a distance of touch you can cast it on yourself, because you are closer than the furthest thing you can touch.
Can the same reasoning that applies to the effect of the spell apply to the ability to cast the spell?
Question to answer: if a creature has the ability to cast a spell at a range of touch, is there any reason why it would not have the ability to cast a spell with a range of self? If the DM allows this, would it cause any problems, or are there any spells that would be overpowered or have unreasonable side-effects if a homunculus could cast spells centered on itself?