If a cards value steadily increases or you notice a surge in interest due to an event (such as a Pokemon anniversary), it may be an excellent time to sell
On the draw this list can be vulnerable to a range of different things and a Dark Ritual can really provide for some nice early swings
Given the volume of tokens you'd expect to create, and the ways you can boost their power and toughness, getting a Vito on the battlefield and managing to activate his ability is effectively a game-ender for an opponent, with each turn you're allowed to swing freely
In Innistrad: Crimson Vow last year, we got a card called Bleed Dry, which is a random, forgotten uncommon that is the same as the front side of Invasion of Innistrad but with the upside of exiling the creature that it kills, and cards like Tragic Slip and Tragic Fall do the same thing for one or two mana if their morbid or hellbent conditions are met
Then using that filtered list I could pull images from Scryfall to build an Anki deck with