Seifer, Balamb Rival is tricky deathtouch enabler that effectively discourages double blocks, but does a great job of turning opposing creatures to your opponents
With a sacrifice outlet and graveyard reanimation, you can sap your opponents down to zero life with just the two devotion the Gray Merchant himself brings, making him a frightfully easy win for the right deck
Black Cat, Cunning Thief Black Cat, Cunning Thief is a super-charged Gonti, Lord of Luxury that costs more and loses deathtouch, but it grabs a second card and lets you play stolen lands
How much guaranteed damage (or more general advantage) can you get for 1 red mana
When they created what was originally called the Black Lotus Pro Tour, little did they know