For weapons-
At least one for each weapon in the new Knightly Training List. (Long Sword / War hammer)
A few effects idea...
Seeing Stars - you strike so hard your enemy's can not see straight - you have 50% doge for X seconds
Forced Fumble - your strikes disrupt your foe that they can not swing straight - they roll 1's for their next X number of attack rolls
Funny Bone - you strike your foes funny bone - they are forced to jump around (dance) for X seconds as they recover.
Though the gate - you break through your foes defenses and strike 3 times (3 damage rolls on x% of hits)
Positive / Repair Surge - Surge of energy release - Mass heal / repair cast centered on you