The five colors in Magic would be better-represented by mana symbols than by nondescript circles of color
24 Spells Chrome Mox Mothdust Changeling Changeling Outcast Siren Stormtamer Wingcrafter Fatal Push Vampiric Tutor Inquisition of Kozilek Baleful Strix Looter il-Kor Tetsuko Umezawa, Fugitive Spellskite Kitesail Freebooter Never // Return Mistblade Shinobi Yuriko, the Tiger's Shadow Mist-Syndicate Naga Ninja of the Deep Hours Ingenious Infiltrator Jace, the Mind Sculptor Hostage Taker Whirler Rogue Fallen Shinobi Temporal Trespass 16 Lands I have cut Thief of Sanity, Vendilion Clique, Thassa, God of the Sea, Preordain, Surge Mare, and Collective Brutality
Both Aristocrats and Reanimator decks are going to want this yesterday, and possibly even all black decks in general
Paying four mana to draw one card seems like a terrible rate, and by all means, it is, but there are two crucial things to consider before you dismiss this card: the mana cost is entirely generic, and it can snowball fast
Ah, and you also amass a big creature out of the deal