Unlimited power with SRD only materials

[animewatcha]

Pertinent bit in the spoiler below.

Spoiler

Show

Calling Creatures
The second effect of the gate spell is to call an extraplanar creature to your aid (a calling effect). By naming a particular being or kind of being as you cast the spell, you cause the gate to open in the immediate vicinity of the desired creature and pull the subject through, willing or unwilling. Deities and unique beings are under no compulsion to come through the gate, although they may choose to do so of their own accord. This use of the spell creates a gate that remains open just long enough to transport the called creatures. This use of the spell has an XP cost (see below).

If you choose to call a kind of creature instead of a known individual you may call either a single creature (of any HD) or several creatures. You can call and control several creatures as long as their HD total does not exceed your caster level. In the case of a single creature, you can control it if its HD do not exceed twice your caster level. A single creature with more HD than twice your caster level can’t be controlled. Deities and unique beings cannot be controlled in any event. An uncontrolled being acts as it pleases, making the calling of such creatures rather dangerous. An uncontrolled being may return to its home plane at any time.

A controlled creature can be commanded to perform a service for you. Such services fall into two categories: immediate tasks and contractual service. Fighting for you in a single battle or taking any other actions that can be accomplished within 1 round per caster level counts as an immediate task; you need not make any agreement or pay any reward for the creature’s help. The creature departs at the end of the spell.

If you choose to exact a longer or more involved form of service from a called creature, you must offer some fair trade in return for that service. The service exacted must be reasonable with respect to the promised favor or reward; see the lesser planar ally spell for appropriate rewards. (Some creatures may want their payment in “livestock” rather than in coin, which could involve complications.) Immediately upon completion of the service, the being is transported to your vicinity, and you must then and there turn over the promised reward. After this is done, the creature is instantly freed to return to its own plane.

Failure to fulfill the promise to the letter results in your being subjected to service by the creature or by its liege and master, at the very least. At worst, the creature or its kin may attack you.

You're going to have to be more specific as to what you mean by "control methods". Another thing about TO is spells like these are assumed to call the most average and generic specimen of whatever the spell allows. For it to bring anything else would be DM fiat and is excluded from these thought exercises for good reason.

And yes, he only would get one wish, but he only needs one to get his magic item. Which after re-reading the remainder of the OP, I will have to side with Psyren as he seems to have a firm grasp of the rules.

Where the custom magic item guidelines come into this argument can be pretty ambiguous, but I don't believe "grant any ability" is located anywhere within those guidelines. There is the precedent of items like ring of evasion for turning class features into items, but I would have to say that unless there exists an item that grants that ability, you would not be able to use it in this situation even with the wish spell.

For the gate spell, creating the magic item of 'this is by RAW a major artifact of this level of power' is a more involved service ( aka further down the spell as far as the control method ) as well as something not doable by wish as ( major or not ) artifacts aren't doable via wish.

If this were TO, then I can see what you mean. However, point to me where near the start of this thread when he wanted this to be about TO and not 'by RAW, what rules can keep this from me'. By Raw, his gate methoding and wish methoding are 'too general' so he winds up screwed in the end. His DM is 'a computer' so he need to be 'less general' to get what he wants with no problems. Otherwise, by RAW and as per 'the computer', he gets screwed.

This thread went from mental exercise of 'By RAW, prevent this' to actually being prevented by RAW with citations and sterf to 'Oh crap. I can't win. I'm just gonna conveniently ignore any evidence against me.'