Sogmen

Haste
{r}{r}: Alter 1 (Remove 1 Rot or Decay counter
from target permanent or player, you may place a counter of the other type onto that permanent or player instead. This can also be done with +1/+1
and -1/-1 counters.)
"Say hello to Skep'nar, fastest steed in all of
Azankanth." - Sogmen, boasting to traveling vendors.