Victory Medal and Victory Cup are other somewhat more benign examples, the former either drawing a card or searching the deck, and the latter functioning exactly as a generic Pokball
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Loyal warhound is the second iteration to Knight of the White Orchid which is both played in this deck understandably for ramp, but Codsworth ramps out equipment every time while the warhound may miss if you have the greatest or tie the greatest land count
Second, it had to happen somewhat frequently, as it's very easy to forget something that's seldom used
Flicker also turned out to be a mechanic that ate up a lot of space in a cards textbox, and the design team for Commander 2017 saw card space as a resource in ever-shorter supply