Paralysis

A Paralyzed creature starts with 3 paralysis counters
on it. When a creature becomes paralyzed it is
removed from combat, and it becomes tapped until
all paralysis counters are removed.
The controller of a paralyzed creature flips a coin at
the beginning of their pre and post combat main
phases. If they win the flip, they remove 1 paralysis counter from the creature they flipped for.