It once dominated multiplayer tables so much that False Cure became almost a requirement
Finally, while I think FLIP effects won't be triggered by choosing "Flip Summon" since the mechanic action of flipping is not happening, it will trigger effects which happen "At Flip Summon", like Guardian Sphinx which shuffles into Deck all opponent mons, Sauropod Brachion changing all other mons to coward position, Exxod inflicting 1000 damage by summoning other monsters in Attack Position and claiming it was a Flip Summon, World Legacy - World Armor laughing to be Summoned, Swarm of Crows discarding from the moment it's Summoned, etc
Each Play Booster contains 14 cards, including 14 rares or mythics, a guaranteed foil, and a chance at stunning Booster Fun treatments
The difference between a PSA 9 and a PSA 10 on cards like these can be substantial
However, that only counts the number of unique cards with different names - in reality, there are a few more cards
Though not a powerhouse on its own, it plays a vital role in setting up your strategy for more powerful Evolutions like Ninetales