If you put a Trickster's Elk on an opposing creature to shrink it down to a 3/3, and then the creature dies later on, you are the one left with the original 3/3 Elk on the battlefield, not your opponent
For more info on those, click those links
Sword of Feast and Famine stands out here due to how powerful and iconic the original card was to see it reimagined with the dark husk of metal with the sprouts of new life garnishing the handle is a treat, and the contrast provided by the sweeping folds of burgundy fabric makes for quite the breathtaking sight
Underworld Breach in the command zone terrifies me though, even if its narrowed to a single card type
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