HD, Saves, Advance as Cleric. No armor or shields, no weapons. Time Lords never gain XP from treasure. They may use any magic item or scroll. They may advance to level 16.
Time Lords have five abilities.
When a Time Lord is reduced to 0HP make a save vs. Death Ray. On a successful save you Regenerate. Roll d100; if you roll above your Constitution, you survive and take on a new form. You keep your XP and levels but re-roll all ability scores and re-roll your HP. You may do this 12 times. Everyone at the table except you gets to describe some new affectation of dress or personality quirk by which you must now abide.
A low-level psychic ability allows you to speak and read any written language; the DM may roll 1d8 twice in a row to make an exception but must get an 8 both times. If dealing with creatures with no spoken or written language who are nonetheless capable of language you may get only vague emotional states.
Once per day you may produce from your pockets some gizmo or other that allows you to roll 1d30 in order to accomplish a task. If you still fail you must make a save vs. Wands/Devices or the DM may make up some worst-case-scenario bullshit to complicate your current situation. If you roll a 30 you not only succeed but may use the same gizmo once more before the day is out.
A target must save vs. Petrification/Gaze or be under your influence. You are considered to have Charisma 20 (+5 bonus) for purposes of extracting information from a neutral party, intimidating/forcing a morale check for your enemies, or controlling your hirelings in a complex or life-threatening situation.
If you survive to 9th level or your 9th incarnation, whichever comes first, you gain proficiency with all weapons and armor, gain the Thief's Sneak Attack ability, and gain a one-time-only d100 roll with a Plot Device (though rolling 100 gets you a second use). You detect as Chaotic Evil.