In terms of rarity, the Dragon is only second to the 1996 World Champion on a technicality
It's literally an Unclaimed Territory 99.99% of the time as spending 6(!) total mana to make a 1/1 Sliver token is such an awful rate that it might as well not even be on the card -- if you regularly activate it then I'd recommend rebuilding the deck, maybe add some more card draw so you have better things to spend your mana on
Ancient Tomb 4 You can play this but it hurts, you want to use your mana every turn and you don't win super quick
Gamble for Life from the Loam, and then even if you discard it, you can dredge it right back
Power Play Conspiracy (Start the game with this conspiracy face up in the command zone.) You are the starting player
As always, narrowing down to our five favorite cards is super tough, especially with an expansion that is as exciting and innovative as the Neon Dynasty is proving to be - which is honestly not surprising, given the unique setting we find ourselves in with this upcoming expansion