Portable Hole

This fine black cloth, soft as silk, is folded up to
the dimensions of a handkerchief.
{t} Unfold and place against a solid surface: 6 ft. diameter, 10 ft. deep.
{ut} Grab the edge and fold: close anything inside.
After 10 minutes => suffocate.
{e} DC 10 Str to escape.
{e} If put inside Bag of Holding: MAYHEM!