Irricant

 The irritation of someone could bring up ability for a short period of time. This is like emotion that is an ability boost. Except, irritation can allow greater strength in effects longer as you remain irritated for longer. The ability boost is very noticeable. As you attempt to work with people while irritated, the duration of the activity is shorter and the anger effect adds itself in. This can impede thoughts and thinking, however, you can get lesser activity results. The duration is very likely an indication, except for the boost itself. As your irritated, you can't think and lose some focus. Just focus your mind and as your irritated, then say an incantation. This is an intent that is spoken or thought to get effect.