Dr. Shroob

{t}: Flip a coin. If you win the flip, this creature gets +2/+2 and Reach for 3 turns. If you lose the flip, this creature gets -2/-1 for 3 turns.
Dr. Shroobs aren't acutally Shroob doctors, but part of the Shroob army. They are seen helping (or hindering) Swiggler.