
As long as you have seven or more cards in hand, this creature gets +2/+1 and has fear. (It can't be blocked except by artifact creatures and/or black creatures.)
Deathmask Nezumi has 1 printing, first in Saviors of Kamigawa (2005). EDHREC ranks it #27,444 among Commander cards.
Cards that show up in the same decks on EDHREC.