yugioh duel links yami yugi deck Ailster Unlock Event and Character Duels – Zero Meta Duel Links Legend Deck guide:

While in combat, UCT can attack all monsters your opponent controls once each, and if UCT attacks a monster in defense position, UCT can activate an effect that will send that monster to the GY and inflict 1000 damage to the opponent

Elsha, Threefold Master takes the deck in a different direction, focusing more on a Voltron build that pays you off with a board full of creature tokens

The restrictions on this card likely keep it from being too broken (most of the time)

Modern MTG asks you to pay 4+ mana to bring a creature from the graveyard to the battlefield, so paying only 1-2 mana is a huge deal

The short version: its a Japanese High Class Pack built around shiny Pokmon, and that combination is exactly why collectors pay so much attention to it