Siege of Mandalore

When Siege of Mandalore enters the battlefield create a 3/3 Mandalorian Super Commando Creature Token with flying.
{t}{r}{r}{1}:Create a 3/3 Mandalorian Super Commando Creature Token with flying.
IF you control three Mandalorian Super Commandos each player loses four life and sacrafice Siege of Mandalore.