Cast Vampiric Tutor by paying {B}, searching your library for Blightsteel Colossus and putting it on top of your library, then causing you to lose 2 life.
Deal combat damage to an opponent using Aspiring Champion.
Aspiring Champion triggers, causing you to sacrifice it, then reveal Blightsteel Colossus from the top of your library and put it onto the battlefield as a Demon due to Conspiracy, then causing Blightsteel Colossus to give each opponent eleven poison counters.
Each opponent loses the game as a state-based action due to having ten or more poison counters.

Each opponent loses the game

Aspiring Champion

Blightsteel Colossus

Vampiric Tutor

Conspiracy

Cast Sylvan Tutor by paying {G}, searching your library for Blightsteel Colossus and putting it on top of your library.
Deal combat damage to an opponent using Aspiring Champion.
Aspiring Champion triggers, causing you to sacrifice it, then reveal Blightsteel Colossus from the top of your library and put it onto the battlefield as a Demon due to Maskwood Nexus, then causing Blightsteel Colossus to give each opponent eleven poison counters.
Each opponent loses the game as a state-based action due to having ten or more poison counters.

Sylvan Tutor

Maskwood Nexus

Cast Worldly Tutor by paying {G}, searching your library for Blightsteel Colossus and putting it on top of your library.
Deal combat damage to an opponent using Aspiring Champion.
Aspiring Champion triggers, causing you to sacrifice it, then reveal Blightsteel Colossus from the top of your library and put it onto the battlefield as a Demon due to Maskwood Nexus, then causing Blightsteel Colossus to give each opponent eleven poison counters.
Each opponent loses the game as a state-based action due to having ten or more poison counters.

Combos with "Aspiring Champion"