Its undying ability keeps your threats coming back with +1/+1 counters, and it even buffs them with a passive +1/+1
Unfortunatley, many people are priced out of competitive play without proxy cards
Though they're pretty useless anywhere else, they're great in multiplayer formats, where they'll be entering untapped on turns 3-4
Why Store Pokmon cards in Cases
One solution would be to just discard the 72nd card from each sheet, which is the error card (I am assuming this is technically possible, it apparently worked for the blank 1st card on the Jungle uncommons sheet, but I cant say for sure if its possible to discard a card from the middle of the sheet)
You'll probably see me forcing all of these cards into almost all of my builds on Commander Clash or Paper content