How to forge a weapon that deals damage to its wielder?

[Sapling93]

I was running a 5E game in person when COVID hit. As many players moved to other cities, we brought our game to Fantasy Grounds.
One of my players had a "Toothbiter" sword (found on Pinterest), which grants adv on disarming attacks, although punishes the wielder by smacking its face (1d4 bludg) if it rolls 1 or 2.
I think the idea of the item is very funny and I would love to create it on FG, but I've been struggling for a couple weeks already...
Is it possible to automate that effect?
Thanks!

[Moon Wizard]

There is no way to automate that ability. You could add an alternate weapon or power entry to the PC that they can apply when it happens.

Regards,
JPG

[Granamere]

If you think about it when you roll the attack role it does not cause damage you hit a separate action for the damage part. So you would have the player roll then when they rolled a 1 or a 2 they would need to target themselves and hit the toothbiter damage button.
40145

Now if you want to go all in you could make a custom fumble table for your group as well. :)