From a speculative standpoint: cards that synergize with Thanoss artifact-based plan and color identity will see demand spikes as the Commander community builds around him
These kinds of cards can be paired with The Twelfth Doctor, which demonstrates a copy of the spell being cast, so they lose at their next end step instead of you
Once your life total is low enough, Deaths Shadow outgrows virtually any other creature in the format, which means that it can be very tricky playing against the card as you dont want to make this monstrosity too big before you can actually handle it
It's a staple of artifact and Affinity decks, and a common removal and burn spell that can be used with just artifact lands to reach the metalcraft threshold
Action cards provide ways to strengthen your own characters or weaken those of your opponents, opening the way for you to keep that precious lore pouring in as you play your way to a win
But whereas the variable nature of the post-mill creature card count might cause that removal spell to miss, Grave Strength is a lot more forgiving and has a bigger upside