The classic is Dark Depths and Thespian's Stage, but theres likely better options these days
For example, if you cast Dirgur Island Dragon, it behaves exactly like any other creature spell
Thankfully, it ended without violence
How it plays Players open 5 free packs daily (6 with Cascade Badge, 7 with Hive Badge), earn coins by selling duplicates at real TCGPlayer market value (10% base sell rate, scaled by trainer level and badge multipliers), buy Basic (50), Premium (150) or Hunt (350) packs from the in-game shop, complete 3 daily / 1 weekly / 4 super quests, and progress through 16 Gym Badges (8 Kanto, 4 Johto, 4 Hoenn) that unlock permanent gameplay perks
While its no Ob Nixiliss Cruelty, I think its closer to that than Sorins Thirst
BGS 9.5 sits between PSA 9 and PSA 10