You could easily find yourself in a matchup where its actually good, have it in your opener (and its not a great topdeck), draw three or four extra cards over the course of the game, and eventually lose to The Scarab God
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Its a great blink target, and later in the game, you can transform it into Kefka, Ruler of Ruin, a strong flier that can draw you so many cards just by attacking and dealing damage
Ad Nauseam One of blacks most famous card draw spells, Ad Nauseam sees play in very powerful decks
He can bring back any creature at all, meaning that if you can stock your graveyard playing Anti-Venom can be a great way to cheat a huge monster into play
The owner of Sellbot1 may also be running Sellbot2, which sells different kinds of cards, and stored credits will also work on it