Magic is hard to make and mistakes tend to involve power level, card draw, and mana
Proxxied is for playtesting, casual use, and custom projects, not official tournament play.
If theres an exerted low-Willpower Evasive Character on your opponents side, Rapunzel can Challenge and remove it
If a creature cant attack or block unless you return a permanent to your hand, and your hand is empty, you can attack or block with that creature and Lupine Prototype
Cook groups are paid communities that provide real-time drop intelligence early links, PIDs (product IDs), restock alerts, and proxy recommendations
Calamitous Cave-In can deal lots of damage around the board, while Compass Gnome and Scampering Surveyor can help to bring any cave from your library to your hand