enable / disable attack 1/2

Is there a way to do that without using a morph ability ?
I've tried to use some orb abilities, it doesn't work, but i didn't try all of them.
Someone know more about that ?

Use the ability Silence. It has a field in the object editor for that.

hmm maybe that tree ability of the mountain giant ?

Give them no attacks and then give them orbs that do the appropriate attacks or have you already tried that orb method? Most people only try "Give attack one, then if I want another attack give attack 2 as well" but just checking.

Also, Root might work.

To disable attacks, get a dummy unit to cast Soul Burn (I think that's it, the Firelords ability).

To change attacks, orb effects are the best way. Grab tree also works okay.