Parry...

[subteraneanbird]

I think to make parry useful, they should make it do some damage, as well as block some. Since if we go to google.com "parry" we get:

par·ry
ˈparē/Submit
verb
1.
ward off (a weapon or attack), especially with a countermove.
"he parried the blow by holding his sword vertically"
synonyms: ward off, fend off; More

Where is the countermove eh?

"Especially" in dictionary context means the word can be used without that additional definition, but the additional definition is also common.

Also, for future reference, the counteract done after a parry is called a riposte. I do think adding a move that procs on parry would be a smart idea.