Go heavy on self-mill and Surveil to dump your heavy-hitters into the graveyard, then tap Xu-Ifit to bring them back for free
Can I use Gold DON cards in tournaments

Here are all the confirmed cards in the set: Related Bulbasaur, Ivysaur, and Venusaur Charmander, Charmeleon, and Charizard Squirtle, Wartortle, and Blastoise Caterpie, Metapod, and Butterfree Weedle, Kakuna, and Beedrill Pidgey, Pidgeotto, and Pidgeot Rattata and Raticate Spearow and Fearow Ekans and Arbok Pikachu and Raichu Sandshrew and Sandslash Nidoran (female), Nidorina, and Nidoqueen Nidoran (male), Nidorino, and Nidoking Clefairy and Clefable Vulpix and Ninetales Jigglypuff and Wigglytuff Zubat and Golbat Oddish, Gloom, and Vileplume Paras and Parasect Venonat and Venomoth Diglett and Dugtrio Meowth and Persian Psyduck and Golduck Mankey and Primeape Growlithe and Arcanine Poliwag, Poliwhirl, and Poliwrath Abra, Kadabra and Alakazam Machop, Machoke, and Machamp Bellsprout, Weepinbell, and Victreebel Tentacool and Tentacruel Geodude, Graveler, and Golem Ponyta and Rapidash Slowpoke and Slowbro Magnemite and Magneton Doduo and Dodrio Seel and Dewgong Grimer and Muk Shellder and Cloyster Gastly, Haunter, and Gengar Onix Drowzee and Hypno Krabby and Kingler Voltorb and Electrode Exeggcute and Exeggutor Cubone and Marowak Hitmonlee Hitmonchan Lickitung Koffing and Weezing Rhyhorn and Rhydon Chansey Tangela Kangaskhan Horsea and Seadra Goldeen and Seaking Staryu and Starmie Mr

Gimbal gives you a haymaker payoff -- big beaters to end the game with -- and is better suited as the leader of the stock list