Three of the 10 most valuable Pokmon cards sold on eBay were Charizards
It's simply one of the best cards in the entire set, if not the single best, and it's already quite hard to come by with a rising price on all sites
Thrakkus the Butcher can offer similar output, and Ran and Shaw is excellent as a card that pumps your other dragons and is sometimes multiple dragons in one card
This includes cards like Solemn Judgement, Solemn Strike, or Red Reboot
As a note, Ezio, Blade of Vengeance can only be found in the Assassins Creed Starter Kit
In the absence of regional Challenge events this year, Set Champs have been the only opportunity people have to get a real competitive experience, and yet, interest seems to be at an all time low