Bone Bearer

At the beginning of your upkeep, you may pay {1}{b}. If you do, return a skeleton creature from your graveyard to the battlefield.
Position 4 — Other skeleton creatures you control get +2/+0. (If in position 4 on upkeep, gain this effect. You can change positions only once per turn on main phase.)
Grinding teeth and shuffling steps echo endlessly in the shadows...