Three mana for a pair of 1/1 fliers isnt great, nor is spending seven mana in order to get a 1/1 flier and a piece of creature removal
But there could still be potential, thanks to its abilities
It's far from the best option if you're only looking for efficient card draw, but for EDH decks that need a Swiss Army enchantment, Black Market Connections is a perfect fit
For purposes of this card, if any part of a player's hand comes into contact with any part of the table top, he or she is "touching the table." This does count, by a player touching the bottom of the table top while playing the Enter the Dungeon subgame
A staple like Ichor Wellspring becomes a powerhouse with Mishra, you draw a card when the copy enters, and another when the Warform is sacrificed at the end of the turn