With good all-around stats and the Detective class, hes versatile enough to be used for questing, but also draws when he banishes in a challenge
The deck is a White, Blue, and Green (or, Bant) deck that revolves around creatures that enter with +1/+1 counters, that synergise with Tidus, Yuna's Guardian's abilities
I think that was around 2020 or 2021
Belle Accomplished Mystic lets you move 3 damage Counters from your Character to the opponents Character, allowing you to either Banish that Character or make it easier for your attackers to deal with it
Dion himself could easily helm a mono-white Knights deck, offering a very flickerable token generation and evasion, with a later game ability to pump the team and even blow up a permanent
#7 Rapunzel & Flynn Rider - Unlikely Pair (Enchanted) Rapunzel & Flynn Rider - Unlikely Pair (Enchanted) Attack of the Vine