Cromat Five-color commanders are often popular, especially in some cEDH tactics, as they make it possible to make Good Stuff decks focused on using the best cards of each color, combo or strategy, to just win fast as is the case with Kenrith, the Returned King or Jodah, Archmage Eternal
For Rin and Seri, I avoided tutoring (even Fetch Lands), selected almost exclusively cards that were on-flavor (cats and dogs tribal) or on-strategy (related to tribal), and prioritized playing as many cats and dogs as possible
Solgaleo 198 Decidueye ex Grass 170 Pierce the Pain This attack does 100 damage to 1 of your opponent's Pokmon that has damage on it
Yes, Mega Evolution cards are valuable due to collector demand, nostalgia from the XY era, and limited availability, with certain iconic Pokmon and Secret Rare versions commanding significantly higher prices
DDC Dark Prism 80 Weakness: Grass Retreat: 2 ex rule: When your Pokmon ex is Knocked Out, your opponent gets 2 points