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We love a good board wipe here, and Ultima is one that can help you deal with the pesky green-black decks and aristocrat decks that love to cash-in on creatures dying

Lifegain Its not well-supported, but there are a couple of lifegain payoffs in the set like Aerith Gainsborough and Minwu, White Mage

Contempt was a staple for the longest time, not least because it was a great answer to Hazoret the Fervent, but Contempt has been sliding because its heavily played in Standard yet nonexistent in other formats

It's one of the best Grixis commanders too

If Yuna only had one of her abilities, shed still be a playable card within the archetype

Switching out his background is a shame since Folk Hero works so well, but Raised by Giants is a solid choice to improve the deck's color identity by providing access to green.