Your goal is to assemble the following pieces: Team Magma's Secret Base, Weavile, Reuniclus, Klefki, two beefy Pokemon to hold many damage counters (Magikarp & Wailord-GX, legal at Dallas Regionals, is ideal thanks to its huge 300 HP), and of course Unown DAMAGE in the Active
Aggro decks can drop off hard in that late game, but Adanto, the First Fort gives the white weenie players a mana sink to keep up some pressure in the late game after generating early board presence as Legion's Landing
However, if you don't want to risk $500 on a card, many players use high-quality proxies for casual play to keep their investments safe in a binder
The following is SparkyFlary's winning list from FLC 4
Lunala 188 Alolan Muk ex Dark 160 Chemical Panic (80) 1 special condition from among Asleep, Burned, Confused, Paralyzed, and Poisoned is chosen at random, and your opponent's active Pokmon is now affected by that special condition