These are indeed somewhat baffling production choices
The basic items are: Professors Research Potion X Speed Hand Scope Pokdex Pok Ball Red Card During events, special solo battle challenges give you the chance to open a promo pack that contains 1 card

$1.29 Obsessive Pursuit (0340 - Showcase) Avatar: The Last Airbender Variants $2.29 Azula, Cunning Usurper (0303 - Borderless) Avatar: The Last Airbender Variants $2.79 Momo, Friendly Flier (0317 - Borderless) Avatar: The Last Airbender Variants $3.49 Koh, the Face Stealer (0322 - Borderless) Avatar: The Last Airbender Variants $0.79 Zuko, Conflicted (0302 - Borderless) Avatar: The Last Airbender Variants $0.49 Tiger-Seal (0318 - Borderless) Avatar: The Last Airbender Variants $0.99 The Fire Nation Drill (0321 - Borderless) Avatar: The Last Airbender Variants $0.49 The Lion-Turtle (0328 - Borderless) Avatar: The Last Airbender Variants $0.59 Diligent Zookeeper (0327 - Borderless) Avatar: The Last Airbender Variants $1.99 Waterbender Ascension (0310 - Borderless) Avatar: The Last Airbender Variants $0.49 Avatar Destiny (0333 - Borderless) Avatar: The Last Airbender Variants $0.99 Aang's Iceberg (0336 - Showcase) Avatar: The Last Airbender Variants 0 results found

You can sacrifice it, get two 3/3 Wurms, and then immediately reanimate it, even using one of its offspring to reanimate it
Discard a bunch of Mad Party Pokmon with Ultra Ball or other discard engines, then move a Ditto to the active position for a surprise attack