If a deck requires Pokemon to stay alive for as long as possible, then this would definitely be the best choice of cards for competitive play
Mind you, these are all just my opinions and Im not a competitive TCG player nowadays, but hopefully it gives you some inspiration if youre newer to the card game and are looking for some potential strategies
Ok Booster Box (Pokemon Japanese White Flare) Details All prices are the current market price
Liesa, Shroud of Dusk is expensive at
You eventually get far more creatures, mana, cards, and life than your opponents, and you can close things out with cards like Lathiel, the Bounteous Dawn, Nykthos Paragon and Blossoming Bogbeast
5 Brightstone Ritual According to the flavor text, powerful wizards and other spellcasters covet that stone, but Goblins love how shiny it is, and this card is indeed much better for Goblin tribal decks than Wizard decks