That doesn't stop all things from happening to you like a Teferis Protection might (and even then, there are ways around that too), but it does stop you from being targeted directly by everything from cards to attacks to Planeswalker abilities
A vividly-colored Greninja serves as an early frontrunner as the expansions premier chase card while a range of trainer cards featuring the likes of Carmine, Kieran, Perrin and more are also sought-after cards
Cards from The List were first featured in Zendikar Rising Set Boosters, and continue to be included leading up to Streets of New Capenna
Slightly illegal
In Commander, 20 damage on its own isnt enough to kill off a player in one hit, but the ability to shoot someone with this ability and then swing in with Inferno is something thats going to cause everyone else a lot of grief
Why do some proxy cards come close, but still feel a bit off on the table