Trapped Under Ice

Cumulative Upkeep {p/u}
{t} Untap all permanents you control. This card
does not untap unless all other permanents you
control are also untapped. If one player gets an
untap step, all players get an untap step as well.
Players may only untap one land, one creature,
or one artifact during each untap step.
If you control a {s} permanent, you may
untap one of each type each untap step.
"No release from my cryonic state."