"Block" ability

I'm making a special ability called Block, whch is a turn on/off ability. I can make it defend X % of the time, and block X % f damage, but I cant make it slow the unit using it down, and prevent them using attacks/abilities while it is activiated. Its kind of really important to this mod im making so little help please?

Is it Defend-based? Then the relevant fields are "Attack Speed Factor", "Damage Dealt (%)", "Damage Taken (%)", "Magic Damage Reduction", and "Movement Speed Factor"; however, the second is what damage is reduced to, while the fourth is what speed is reduced by.

As for removing the unit's abilities and attacks? Use triggers (ie "Unit - Remove Ability"), or use Bear/Crow Form or Metamorphosis to transform it into an identical-in-appearance unit without attacks or abilities except to "turn it off" (change back into the unit with 'em) and to hold any items the unit previously could carry.

just get an evasion spell change it so each lvl it goes up by ow much % you want and use triggers to turn off the ability