
All Sliver creatures have flanking. (Whenever a creature without flanking blocks a Sliver, the blocking creature gets -1/-1 until end of turn.)
Sidewinder Sliver has 3 printings, first in Time Spiral (2006). EDHREC ranks it #12,196 among Commander cards. It appears most in The First Sliver decks (3,056 on EDHREC). It has 3 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.