Fell the Profane / Fell Mire Modal double-faced cards that are lands on one side and spells on the other have proven to be popular in Constructed formats, and Fell the Profane is an example of an excellent one from Modern Horizons 3
While this card's price history has been tumultuous to say the least, there seems to be significant momentum pushing it back towards the $20 plateau that it fell from

2 CARD VIEW ST03-008 | C | CHARACTER Trafalgar Law Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Heart Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -ONE PIECE CARD THE BEST- [PRB-01] CARD VIEW ST03-008 | C | CHARACTER Trafalgar Law Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Heart Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -ONE PIECE CARD THE BEST- [PRB-01] CARD VIEW ST03-008 | C | CHARACTER Trafalgar Law Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Heart Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -Blue Donquixote Doflamingo- [ST-17] CARD VIEW ST03-008 | C | CHARACTER Trafalgar Law Attribute Slash Block icon 1 Type The Seven Warlords of the Sea/Heart Pirates Effect [Blocker] (After your opponent declares an attack, you may rest this card to make it the new target of the attack.) Card Set(s) -ONE PIECE CARD THE BEST- [PRB-01] CARD VIEW ST03-017 | C | EVENT Love-Love Mellow Block icon 1 Type The Seven Warlords of the Sea/Kuja Pirates Effect [Counter] Up to 1 of your Leader or Character cards gains +4000 power during this battle

It spreads around -1/-1 counters on ETB and attacks, and takes those creatures our of commission on defense
Printing Proxies Printing Proxies is better suited for players looking to proxy up an entire deck
Common custom dimensions include: Square cards typically 3 x 3 inches , often used for educational decks, flashcards, or art-focused collections