My opinion As I said, I think Pokemon cards are a great investment, for the following reasons (among others): The Pokemon franchise has a huge fan base, and if anything: it's growing, not shrinking
Theyre harder to get hold of, and much pricier, but you can get them in Booster Boxes if you have the money to spend
While I dont think thisll climb as high as The Ozolith (its not an artifact), I think that itll end up being a $10+ card by the time Dominaria United releases
Enchantment - Saga Removal (CTRL to add secondary) Retrieval Vat of Rebirth Whenever another artifact or creature you control is put into a graveyard from the battlefield, put an oil counter on this artifact
Pokemon Celebrations Special Collection Pikachu V-Union Box Celebrate a fun new challenge with Pikachu V-UNION: a single powerful Pokemon divided into four cards
The third pillar of the format is represented by control decks built around Tablet of Discovery, Stock Up, and Jeskai Revelation