I think I'll stop posting ALL of the monsters I convert here, instead I'll only post if I would like some input.
For example, I'd like to make the mechanics for pulling this monster free a bit more elegant, but I'm not sure how. I don't want it to be a simple STR comparison though, for example requiring a combined STR of 30 or whatever, I want the players to have to make some rolls to accomplish it, and I want it to depend on STR.
Ittan-momen
Armour Class: 7 + see below
Hit Dice: 2*
Move: Fly: 180' (60')
Attacks: Suffocate, See below
Damage: See below
No. Appearing: 1 (1-3)
Save As: Fighter: 2
Morale: 7 + see below
Treasure Type: Nil
Alignment: Chaotic
The ittan-momen appears as a bolt of cotton cloth fluttering in the breeze, about 1 foot wide and 35 feet long. On a successful attack roll, it has wrapped itself around the victims head and body, the victim will suffocate to death in 10 rounds unless the ittan-momen is removed. This may be accomplished by killing it (attacks automatically hit, but will do 1/2 damage to the monster and 1/2 damage to the victim), or by pulling it free. Pulling it free will require successful Open Doors rolls for 3 rounds in a row, these Open Doors rolls may be made against the creature instead of a normal attack roll. A maximum of two people may attempt to pull it free simultaneously. Note that the 3 rounds required must be in unbroken sequence, if all Open Doors rolls are failed on any given round, the creature retightens its grip and the pulling must begin anew. When wrapped around a victim, the ittan-momen's Morale becomes 12.