Varyc, the Shadow Rogue

Hexproof, Unblockable
Whenever Varyc, the Shadow Rogue deals combat damage to a player, draw a card.
Whenever Varyc, the Shadow Rogue becomes blocked, exile him, then return him to the battlefield at the beginning of the next upkeep.
None of the Shadow Guild have been as reckless as Varyc, yet none have been as successful, either