There are a few rules to bear in mind
Its not an easy task, but a worthy goal of any true Trainer
Like most Magic: The Gathering cards, the value of Four Knocks depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Doctor Who)
Any deck, especially creature token decks, can utilize Triumph of the Hordes as a win condition of epic proportions
Its not unusual for players to pick a broad theme like creatures that have alternate anime arts and then fill in with a few spells that might not have anime art, but still fit the decks strategy
The card can only be played if the opponent has two Prize cards remaining and, during the turn it is played if their Active Pokmon is Knocked Out by damage from an attack used by the players Tera Pokmon, players take an extra Prize card