You can swap out up to three cards this way, all while powering up Jaya
You could play Disenchant, Power Sink, or Duress - from your hand or from another stack
You also need to make sure you hit your land drops, either with draw effects (Qiqirn Merchant and Adventurers Airship provide usable bodies as well as draw smoothing) or cards that directly give you lands or mana (World Map, landcyclers, Blitzball)
The reason why this card was good was the value it generated
Ability: Dazzling Gaze As long as this Pokmon is in the Active Spot, attacks used by your opponents Active Pokmon cost [C] more
Keep an eye out for the little Clefairy doll tucked into the scene too, making this a fun cameo card on top of a great illustration