"Double" and "Triple" HP Washing?

you need about 150 int for bowmen/thieves to get enough mp to double wash with the minimum mp gains, about 135 assuming you get the average mp on level up and on each point. IIRC someone calculated the MP gain through AP as (total int / 10) * 0.75

Min. MP gain + FLOOR(INT*.75/10) if if remember correctly. The min MP gain is like 14 for thieves, but that part might be the random 14-16; I can't remember right now.