So running this card is going to bring up your turn 0 odds of hitting whatever specific creature/land you need in your opener from 40% to 48% while also improving all subsequent draws due to a reduced deck size
It toes the line of enshrinement in the format like Sol Ring even though it also plays with the unfun play patterns and reduction in diversity traits that banned cards have
Cards from Set 6, a new promo card, details on Championships, and what could be the rarest card ever all got revealed today, August 9
I think that's reason enough for your opponents to have final say over what is or isn't out-of-bounds
Additionally, its an excellent resource for determining the current market value of your cards, helping you decide the best price for your listings and learn how to sell pokemon cards effectively
If the exiled card isn't a creature card, the token copies will still be created and they'll still enter tapped