We will all fight, for if we fail, we will certainly all die
Put the rest on the bottom of your library in a random order." On top of that, it also costs one less mana to cast for each artifact you control, which means it could be as low as two mana if you've got enough artifacts in play
(Well, unless you're playing the excellent Fire // Ice, of course.) Aftermath, on the other hand, always gives you that wonderfully useful extra card
A big part of why Vraska is able to hit her ultimate more often than you might expect is that she is so little of a threat
Braids, Arisen Nightmare A very popular mono-black commander at casual tables and quite capable of making the cut into the 99 of cEDH decks, Braids, Arisen Nightmare is the delight of sacrifice-heavy decks