Well the stadium is good, but every deck that plays special energies right now has a reliable way to find stadiums to bump it out of play. Arceus decks can just search a stadium with their Vstar power and mew decks can try and dig out a stadium if they're going for a Meloetta line. It's a good...
That Tsareena easily seems like the best partner card with Ludicolo from Evolving Skies. Maybe it could make a home in an Aurora box deck alongside Suicune V that uses other bench sitting or evolution effect Pokemon like Umbreon VMAX?