If the Head Judge determines that a player is using non-Englishlanguage cards and/or misprints to create an advantage by using misleading text or artwork, that player will be subject to the appropriate provisions of the DCI Penalty Guidelines." Personal Experience I have played in numerous PTQs and countless FNMs with altered art cards of all kinds
Thankfully, the MTG x Marvel crossover drops seem to be addressing this issue
You'll find plenty of burn spells to clear the way, anthem effects to pump up your creatures, and sacrifice synergies to keep the advantage
An altered card (Altered) must be marked with the appropriate icon and listed for sale under the following conditions: PLAYED A card still usable in tournaments, partially altered, and in good enough condition to be played
You can learn more about the new Roll for Initiative D&D Superdrop on the official Secret Lair website
Unsurprising as players find Clarabelle can consistently draw a full hand of cards