It's arguably easier to build a Brawl deck in Arena, as you'll typically need a lot fewer wildcards or pack luck due to the singleton nature of the format, even though the overall deck size is much bigger
Like most Pokmon cards, the value of Shaymin-EX depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Legendary Treasures)
EX12-076 SEC Digimon Lv.7 Susanoomon Color Yellow White Red Cost 16 DP 16000 Digivolve Cost 1 Multicolor 6 from Lv.6 Form Mega Attribute Vaccine Type Shaman/Shambala/SW/TB/TS Card Text 1 [Special Digivolution Condition] [Digivolve] Lv.6 w/[Hybrid]/[Shambala]/[TS] trait: Cost 5 [Effect] Rush Raid Blocker [On Play] [When Digivolving] To all of your opponent's Digimon, give -3000 DP for the turn for each color in this Digimon's digivolution cards
I've always seen the stories of people like, Oh, look what I found
If treated as an Effect Monster, it can Tribute itself to put any other Hieratic monster on the board in Defense Position (without dropping its ATK/DEF)