From WotC's perspective, they decided to sell proxies at $250 per pack with 30th Anniversary Edition , so all bets are kind of off there anyway
they all grant an additional +1/+1 counter whenever any amount of them would be placed on your stuff
If theres ever to be a list of top-100 incorrect MTG new card evaluations, this one is top-5
The original justification for the banning back in 2011 was that two damage for three mana (thanks to Grove of the Burnwillows forcing the opponent to gain life) was a bit too good, especially against decks featuring small creatures, which Punishing Fire was keeping from the format
What Happens When a Wither Creature Damages a Player
So if you thought you could simply copy your Luck Bobblehead 1,000 times to guarantee seven results, well, that does not work