Disarm:

Disarm [Minor] by Iczer

‘Ninjas? More like Non-jas. Am I right guys..’

The character can disturb the motor cortex in targets within 20 feet. By expending one action per melee round, all targets within his range become subject to a kind of neural dampening that inhibits timing and co-ordination. Every round targets must make a saving throw (14+ ME bonuses apply) or lose one attack per melee. Furthermore, they must repeat this saving throw every time they attempt to utilise any special combat training (anything beyond first level proficiency in a HTH form or weapon skill) or simply lose the action. (as if the roll was a one) anyone realising what is happening to them may choose to fight at first level proficiency to avoid wasting actions, but this does not remove the potential -1 action per melee round.
Targets with Natural combat ability ignore this power. Likewise targets whose levels exceed the characters receive a +2 to the relevant saving throw.