This card is likely a reference to Goblin Rock Sled, a weird card from The Dark that also features a goblin having fun but in a much less snowy way
The most popular suggestion about what battle could be centered around the scrapped Skirmish mechanic
Just one Officious Interrogation will pump him up considerably, for example
Your opponents often need to remove this nightmare angel before they can kill you since youll often have more cards in your library than life points, even at the double rate, and they need to consider the risks of enabling your graveyard strategy
This can net me two of those cards
By reducing our dependence on Harold, we dont need to waste slots enabling him, and were already in the right colors to make full use of All That Glitters, which is by far the most powerful aura in Standard for Harold decks