Including cards that are only for one archetype is fine, but you don't want to include too many of them
As Polygon notes, The Pokmon Company has made clear that, when fans distribute art featuring any of the companys copyrighted intellectual property, they are agreeing to a royalty-free, non-exclusive, irrevocable, transferable, sub-licensable, worldwide license that gives it the right to use, transmit, copy, modify, and display Fan Art (and its derivatives) for any purpose. Legally speaking, that means TPC would have been in the clear to keep the immersive Ho-Oh as is
Though it doesn't quite reach the same crazy numbers that one does, it's still an expensive card to pick up
For instance, you can play a land from exile this way only during your main phase while the stack is empty, and only if you have an available land play remaining for the turn
Starting out as a new collector means theres a lot to learn and we know exactly how confusing it is
Useless effect