Wizard of the South

Sleeping (can only blocked by creatures with sleeping)
{t}: Put a sleep counter on a target creature or artifact.
{u}{g}{t}: Transform creature/artifact with sleep counter in copy of Legendary Artifact Creature - Markies. Activate this ability only at three sleep counters on creature/artifact.
Sleeping seems harmless but many lost precious time in resting. (M. Sander, Wizard of the South)