These, my friend, are adventures
Artifact tokens are unique in that there aren't actually too many named artifact tokens, with only roughly 30 in the game (and some of those can only be made by one card)
In another Tweet, she states that the Pikachu card will also be released in January, but doesn't reveal how to get it
During their turn, if their opponents Active Pokmon is Knocked out by damage from an attack used by their Tera Pokmon, they take one extra Prize card
While a 6/6 creature is not all that imposing, Deep Spawn has the ability to make itself untargetable until end of turn for just a single blue mana, effectively has some form of evasion with the Trample ability, and also mills cards from the top of your deck in to your graveyard during your upkeep (which can fuel further reanimation shenanigans on future turns)