Fore example, 005-193-doc-bold-knight is very efficient card draw, but requires a certain playstyle to maximize
Those products also had non-standard card backs, making them unusable in tournaments
This card is at its best in explosive decks that struggle against stax pieces, and at its worst in highly interactive decks, which is why I personally dont have experience with it, because I tend to play the exact wrong decks for it, but when youre the kind of deck that wants it, it often works as more versatile instant speed sweeper
One such card could be Cecil, Dark Knight, which costs 1 Black mana for a 2/3 Legendary Creature with Deathtouch, but it arguably has a downside that is not necessarily its Darkness ability, but the fact that one can't have multiple copies of this card on the battlefield at once
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Legal Oathbreaker Legal Penny Legal Ballroom Land This land enters tapped
Duress Duress definitely has a whiff rate