UniVersus has been around in one form or another since 2006 (not quite as long as MTG of course, which first launched over thirty years ago, in 1993!), and allows players to use characters from wildly different series, taking on opponents in one on one battles, reminiscent of the combo heavy style of arcade fighting games
You can also save the original asset files and put them in another folder if you want the option to remove the mod
Copperajah VMAX also has a retreat cost of four-energy, but players having the Buff Padding Tool-card with them can use this to their advantage by further extending Copperajahs HP by 50
This itself can be dealt with by simply bringing out a Level 4 or lower monster and aiming for battle destruction, but at that point, there will be no finish this turn, so you just shut out the opponent's desperate struggle with Baronne de Fleur and the like
2 Ultra Prism Ultra Prism is a great expansion in both its aesthetic and competitive viability, letting you win round after round with style
See rule 701.57, Discover. 701.57a: Discover N means Exile cards from the top of your library until you exile a nonland card with mana value N or less