Be sure to add as many premium signatures for however many cards you would like signed that way.
Sure, demand for rare Pokmon cards may be high right now, but it could easily disappear overnight as young investors and collectors turn to something else
For example, if you control The Ozolith when Iron Apprentice dies, you will put the appropriate number of each kind of counter onto both The Ozolith and the target creature
This combo can already be absolutely nuts when it goes off, scooping up an entire location's worth of clues or 1-shotting all but the most bulky of enemies while also giving you 2 extra actions and a ton of resources
This, in turn, can allow the player to deal some devastating blows to their opponent if they manage to successfully inflict the status condition they need in time, as long as the opponent doesn't manage to wake up
Atarka's Command This is only low on the list for being narrow