Pokemon-GX replaced the previous EX mechanic with a meaningful distinction: GX attacks could only be used once per game, creating high-stakes tactical decisions
You can get the promo when purchasing $15 of Pokemon TCG merchandise
Special Summon 1 non-Fairy "Generaider" Xyz Monster from your Extra Deck, then you can attach cards from any field and/or GYs to that Special Summoned monster, up to the number of materials this card had
8 Kakko no Iinazuke (A Couple of Cuckoos) Kanan-sama ha Akumade Choroi Kanojo, Okarishimasu (Rent a Girlfriend) Kishibe Rohan wa ugokanai (Thus Spoke Kishibe Roha Kaoru Hana Wa Rin To Saku Karakai Jozu no Takagi-san (Teasing Master Takagi) Kimetsu no Yaiba (Demon Slayer) Kochikame Komi-san wa,Komyusho desu (Komi Can't Communicate) Konjiki no GASH
One of our favorite Delivery cards was "Chicken" which doesn't do a lot of damage unless you roll really high, but is just absurd
That can vary from group to group, especially if players have decks that interact heavily with lands and thus mass land destruction would level those strategies