If it becomes Hostile when you try to charm it, then you can easily level him up to lvl 20 and be Dire in about 30-40 minutes. I wasn't sure if those Rainbow Phoenix are hostile or not when you tame them... guessin they are.
Idea of this is to begin charming it, and cancel the charm before it finishes, and let it stay hostile and let it attack you, and eventually kill you to lvl itself up.
Quickest way to do this is get a hero monk with any healing skills including Orison Of Healing, Resurrect, and Res Chant... Disable All healing skills besides Resurrect, until you get 60dp. Flag your monk down just out of earshot, and put him to "Avoid Combat". For your ranger, all you need is charm, and nothin else. Put 2 sup runes on your armor, and 1 major rune of any kind, with Sup vigor...If you only have Minor or Major Vigor, make up the difference with Vitae runes. Minor = 2 Vitae, Major = 1 Vitae, Sup = None. When you get down to 60 dp you will only have around 6-10 hp. Make sure not to be holding any weapons that give +30hp, and don't put anymore health sacrificing runes on or you will die over and over without being able to charm once your down to 60dp. And with this low amount of health, once you get down to 60 dp and have under 10hp, your pet will beable to kill you with 1-3 hits. The will kill you to gain exp to level themselves up to desired level. This is Basically the fastest way to level your pet and make them Dire at the same time... faster than what is suggested on Wiki. It only takes about 30-40 minutes (maybe less) compared to acouple hours.
================================================== =======
1. Make sure you got your armor with right amount of hp sacrificing runes to ensure that you have 5-10 hp when you get down to 60dp.
2.Flag your Hero Monk just outside earshot, where you will be standing, and set to Avoid Combat. Disable all other skills besides Ressurect. Once you get 60dp, enable Orison of Healing...so your monk can heal himself if needed. (the Monk will heal you after you are res'd... but the healing won't do much, and you will still die in one hit by your pet. Aslong as you got around 10hp)
3.Begin Charming your new pet, and cancel it out before it finishes. Let it attack you, and eventually kill you until you got 60dp...and the power levelin will begin for your new pet. (your monk will res you soon as you die, and will heal himself if needed)
4.You can go AFK until your pet reaches level 20. Your pet needs to reach lvl 15+ without dying to be Dire. But why not get Dire and Level it to 20?
5.Once your pet reaches level 20 and ready to charm, enable your Monks skills and use Res Chant to Res yourself. Once your are res'd, quickly take off any armor with Sup or Major Runes (besides Vigor). Or you can simply change armors, or put equip any weapons with HP bonuses. This way your pet won't kill you in one hit and beable to stay alive while you charm it. Your monk will also help keep you alive while you charm.
6. Enjoy your new lvl 20 Dire pet... that only took around 30-40 minutes to level
