Only now that some of the Throne of Eldraine issues are cleared up are we starting to see the format really adjust to that, and in turn how decks and sideboards react is just catching up to that wave of new top decks
Without going too deep in the top-down design, the Mosswood Dreadknight is the sets take on the Arthurian legend of the Green Knight who, after being decapitated by Sir Gawain, rides away for the two to meet a year later hence the card coming back from the dead after a time
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Smokebraider gives us two mana to use to cast Elementals or activate the abilities of Elementals, which is great because some of the Lorwyn Elementals, like Inner-Flame Igniter, have abilities that get additional effects if you can activate them multiple times
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Sticking a 6/6 flyer and then casting Armageddon might be enough in 60-card Constructed, but in Commander thatll mean several turns of uninterrupted swinging, but probably no actual player removal before the pod catches up, or destroys Numot