Weve already touched on the importance of not giving your opponents more information or time than you have to, but as its good advice for Commander games in general, it bears repeating here as well
If the creature an opponent controls is the illegal target, you won't become the monarch when it dies
The internet is chaoticbut well break it down for you in one daily email
For the mirror, we want Hina3
This means that if you include Prime Catcher, you cant also include Unfair Stamp in your deck
But these things are also beautiful, if you just stop and look at them, and TCG Pocket carries that beauty over surprisingly well, most obviously with the handful of snazzy "immersive artwork" ones that take you on a guided, 2.5D tour of their own little goldfish bowl worlds