Blightsteel Colossus, and Blade of Selves

Prerequisites

• Blightsteel Colossus on the battlefield
• Blade of Selves on the battlefield
• Blade of Selves attached to Blightsteel Colossus
• Blightsteel Colossus does not have summoning sickness
• Opponents are unable to block and kill your creatures

Steps

1. Declare Blightsteel Colossus as an attacker
2. Blightsteel Colossus' myriad ability triggers, creating a token copy of itself attacking each other opponent
3. Deal combat damage with each Blightsteel Colossus, giving each opponent eleven poison counters
4. Each opponent loses the game due to having ten or more poison counters

Results

• Each opponent loses the game