Simple, get a couple dozen Scranton reality anchors, disguise them as rocks or something, arrange them in a circle configuration, trick discord into going into the center of the circle, activate the anchors, and while his powers are completely inhibited shoot him up with lead and set the body ablaze, and finally store the ashes in a secure Scranton box to be locked away forever
Oh my!
oO
Nah his punishment will be… THE STARE.
Naw, naw. Leave him in a room with me, and we’ll see if there’s enough of him left to bury. If not, then oh well.

your current filter.Have Fluttershy give him a time-out in the naughty corner with the pouty eyes. ^^
*He’s