Once the exchange has happened, either of the two creatures leaving the battlefield has no effect on the other creature's text box
Reached for comment, publisher Wizards of the Coast said, There is currently no plan to add the ability to transfer cards from paper to Arena, however, some physical Planeswalker Decks from stores have a code to redeem for that same deck in Arena and pre-release Sealed play sets have a code for redemption in Arena. Outside of the games mechanics, Magic Arena has a lot of growing to do as it approaches its full release. Arena deserves more background art and better, more listenable musicboth currently feel like afterthoughts
If you play Summon: Fenrir with Doubling Season in play, you'll place two counters on Fenrir as it enters, triggering chapters I and II at once
Stalwart Unity: While not quite as deep as Invent Superiority, Stalwart Unity has a bunch of really good reprint commanders, with Zedruu the Greathearted, Selvala, Explorer Returned, and Edric, Spymaster of Trest all ranked among the top 75 most played in Commander
Oh and a huge, trampling 7/7
