Masked Rogue

Masked Rogue's power and toughness are
each equal to the converted mana cost of the
top card of your graveyard. If you have no
cards in your graveyard, it has base power
and toughness 2/2.
At the beginning of your upkeep, surveil 1. (Look at the top card of your library. You may
put it into your graveyard.)