Jumbark the Hostage Taker

At the start of the game, put five hostage counters on Jumbark the Hostage Taker.
{5}{t}Remove a hostage counter from Jumbark, tap all permanents. They don’t untap during their controllers next untap step. Activate only as a sorcery.
Once the final hostage counter is removed from Jumbark, you and target opponent lose the
game.