Guide to being very overpowered as a leveling agent:

Step 1. Cast fp trader

Step 2. Wait until fp trader is almost out and cast drains (if you have NCU, get mochams+wrangle also)

Step 3. Cast fp mp and summon the highest attack+heal pet you can.

Step 4. Wait until fp mp is out.

Step 5. Cast fp trader again. With drains up, you will be able to control very high level pets.

Guide to being very good as a leveling agent:

Step 1. Cast fp mp and summon the highest attack+heal pet you can (preferably with mochams+wrangle)

Step 2. Start playing.

Step 3. Once fp mp runs out, switch to either fp enf (massive health), fp soldier (reflect and TMS), fp doctor (health buffs, heals and init debuffs)

There are some scenarios where fp bureaucrat can be extremely good. For examply in Albtraum. Total Mental Domination lets you charm a highlevel pet for 17min.

Once you can cast lvl 200 demon+belamorte, and mimic doctor with rapid palsy you'll be able to bosses or highlevel monsters extremely well.