2l8m8:
#1: Can a lesser wish (wish, greater wish) be used to influence a HT roll required by a spell? It says it can't affect the actual magic, but I think this would be allowed, because it's a physical effect, not a magical one. Sprt of like the dodge roll required by a missile spell. (See the spell Conduct Power in the Grimoire.)
I believe Lesser Wish can effect any roll, except for the actual skill roll to cast a spell. Most anything else should be fair game. Other GM's could disagree.
2l8m8:
#2: If this is allowed, then the HT roll required by conduct power (draw power) can be automatically successful.
Yes.
2l8m8:
#3: There is no maximum for conducting (drawing) power if your HT roll is made.
The maximum would be however much power the source can provide in one second. Each second you exceed your safe maximum requires another HT roll, which could take a lot of Lesser Wish spells if you intend to be there for a while. :P
2l8m8:
#4: If you find a large enough power source (volcano, the sun, a supernova), you can do quick and dirty enchantment for just about any energy cost, even at low tech levels. It would be no big deal to do 50,000 cost items. Of course, having both the mage and the item in a volcano causes unique problems in and of itself, but we can presume someone with this ability can deal with that.
Cue screeching halt. First, remember that distance midifiers apply. A sun, or a supernova, would be way too far away to work; and a with a volcano it would have to be erupting, and you'd have be pretty much
IN it along with whatever you're channeling the power to. Also, it's a bit of a stretch to use the energy to power enchantments; unless I grossly misread the spell, the energy your conducting is used to power machines.
Sure, in a sci-fi setting, a mage on a dangerous planet could use a volcano to charge their ship's power core and fly off. But I, personally, wouldn't allow it to conduct mana. If you rule it can conduct mana, then you've stemmed off into house-rule areas, which means the limits are pretty much up to you at that point.