In Mystery Booster 2 , you'll find one of these in every booster, complete with original artwork from the talented artists at Volta
Bloodletter of Aclazotz This is not just one of the best vampires, but also one of Magic's best demons
Finally, if they cast their second spell that turn, you'll draw again
For four mana, you get a Blue and Black 3/3 with hexproof that reads, Whenever a creature card is put into an opponents graveyard from anywhere, you may have Lazav, Dimir Mastermind become a copy of that card, except its name is Lazav, Dimir Mastermind, its legendary in addition to its other types, and it has hexproof and this ability. The key thing here is how often they can change their form, because it means you can always have the best possible thing at the table, and it even has hexproof
Haunted Library is a bit more niche with that mana cost for activation, but its still decent in some decks
Pack Rat also made quite the splash during its time in Standard, with the aforementioned Owen Turtenwald leading the charge
