mtg design your own card MTG.Design: Custom creator Printing Custom Magic Card Proxies

The Ursula Scenario Deck has a unique card back to differentiate it from standard cards

There are plenty of Pillowfort effects that trigger when any player attacks or when they attack you , and Isshin will double these triggers, too

It's also a strong powerhouse reprint from Starter products that people forgot about

Defensive interaction, particularly effects which can protect noncreature permanents, are potentially the most impactful of all

Equipment has some other hooks we can find synergy in

Honorable Mention: Chandra, Dressed to Kill Coming in for only three mana, Chandra, Dressed to Kill is a versatile Planeswalker that offers an extra card on each turn