Note that you cannot pull counters off players, just permanents, which is bad because this isn't an answer to Experience Counter abuse in Commander
I ran a poll on Twitter to see if I could get a general idea of where people were at - keep in mind, my Twitter followers are a very narrow demographic, and so this poll shouldnt be taken as conclusive
That's not quite serialized Headliner status, but it's not that far off, and it's safe to say this card will be the White Whale of many Magic players
A deck that focuses on creating copies of powerful permanents, such as creatures with powerful abilities or enchantments with strong effects, would benefit from including Copy Token in its strategy
One non-dragon commander that may like the Hellkite is Child of Alara, a WUBRG deck that may wipe the entire board to start things over, then reanimate threats like Two-Headed Hellkite to resume the offensive thanks to haste