there is a cap for Gladiator, Ranger, Paladin. now gm blade effects Assassin differently than the others. two strikes at gm 10 , every 3 levels goes up by one, at gm 13 three, at gm 16 4 attacks per round. and so on. well you can do the math for level 100. thus no cap. same with gm unarmed. only the druid can learm gm unarmed. i did a druid solo for that reason.gladiator can be blade master and get to use two swords. but at gm level won't be able to attack more often using blades. but because of the armsmaster skill at gm gets an extra attack in per weapon. using two blades four attacks per round. using two spears 6 attacks per round. that is all attacks he will get.