mtg commander legends deck Commander Decks [Set of 2] friends are betrayed Magic The Gathering Commander Legends:

And while you don't usually want to exile your combo pieces, Nightmare Shepherd actually enables a new one: Eternal Scourge + Ashnod's Altar is now infinite colorless mana by sac'ing the Scourge, exiling it and sac'ing the token, then casting Scourge from exile

It gives you a cheap play and introduces additional combos with cards like Restoration Angel and Felidar Guardian

It'll matter

Some cards like Two-Headed Giant don't require you to call the coin toss, so none of the results count as winning the flip

Meanwhile, Izzet Prowess is all about non-creature spells and making lots of tokens with prowess

And between alternate art frames and good cards for Constructed formats, this set packs huge value