Cast Goblin Recruiter by paying {1}{R}.
Search your library for Mogg Fanatic, Kiki-Jiki, Torch Courier, and Conspicuous Snoop, and put them on top of your library in that order.
Draw a card by any method.
Cast Conspicuous Snoop by paying {R}{R}.
Cast Torch Courier from the top of your library by paying {R}.
Activate Torch Courier by sacrificing it, giving Conspicuous Snoop haste until end of turn.
Activate Conspicuous Snoop using the ability gained due to Kiki-Jiki being on the top of your library by tapping Conspicuous Snoop, creating a token copy of itself.
Repeat step 7 for infinite tapped token copies of Conspicuous Snoop.
Activate your untapped token copy of Conspicuous Snoop by tapping it, creating a token copy of Goblin Recruiter.
The Goblin Recruiter token enters the battlefield, searching your library for Mogg Fanatic and putting it on top of your library.
Sacrifice an arbitrarily large number of Conspicuous Snoop tokens using the ability gained due to Mogg Fanatic being on top of your library for an arbitrarily large amount of damage.

Infinite damage

Infinite death triggers

Infinite creature ETB

Infinite creature LTB

Infinite creature sacrifice triggers

Goblin Recruiter

Conspicuous Snoop

Kiki-Jiki, Mirror Breaker

Torch Courier

Mogg Fanatic

Activate Kiki-Jiki by tapping it, creating a token copy of Torch Courier.
Activate the Torch Courier token by sacrificing it.
When the Torch Courier token dies, Kiki-Jiki triggers, untapping itself.
Resolve the Torch Courier token ability, giving target creature haste until end of turn.
Repeat.

Thornbite Staff

Cast Doomsday by paying {B}{B}{B}, searching your library and graveyard for Torch Courier, Kiki-Jiki, Mogg Fanatic, Brazen Buccaneers and Conspicuous Snoop, exiling all other cards from your graveyard and library, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
Activate Grenzo by paying {2}, putting Conspicuous Snoop into your graveyard and then onto the battlefield.
Cast Torch Courier from the top of your library by paying {R}.
Activate Torch Courier by sacrificing it, giving Conspicuous Snoop haste until end of turn.
Activate Conspicuous Snoop using Kiki-Jiki's ability by tapping it, creating a token copy of Conspicuous Snoop with haste.
Repeat step 5 with the new Conspicuous Snoop token an arbitrarily large amount of times.
Activate Grenzo by paying {2}, putting Brazen Buccaneers into your graveyard and then onto the battlefield.
Brazen Buccaneers enters the battlefield, revealing Kiki-Jiki, putting a +1/+1 counter on Brazen Buccaneers and putting Kiki-Jiki into your graveyard.
Activate a Conspicuous Snoop using Mogg Fanatic's ability by sacrificing it, dealing 1 damage to any target.
Repeat from step 9.

Each opponent loses the game

Infinite creature tokens with haste

Doomsday

Grenzo, Dungeon Warden

Brazen Buccaneers

Cast Doomsday by paying {B}{B}{B}, searching your library and graveyard for Torch Courier, Kiki-Jiki, Sling-Gang Lieutenant, Brazen Buccaneers and Conspicuous Snoop, exiling all other cards from your graveyard and library, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
Activate Grenzo by paying {2}, putting Conspicuous Snoop into your graveyard and then onto the battlefield.
Cast Torch Courier from the top of your library by paying {R}.
Activate Torch Courier by sacrificing it, giving Conspicuous Snoop haste until end of turn.
Activate Conspicuous Snoop using Kiki-Jiki's ability by tapping it, creating a token copy of Conspicuous Snoop with haste.
Repeat step 5 with the new Conspicuous Snoop token an arbitrarily large amount of times.
Activate Grenzo by paying {2}, putting Brazen Buccaneers into your graveyard and then onto the battlefield.
Brazen Buccaneers enters the battlefield, revealing Kiki-Jiki, putting a +1/+1 counter on Brazen Buccaneers and putting Kiki-Jiki into your graveyard.
Activate a Conspicuous Snoop using Sling-Gang Lieutenant's ability by sacrificing a Goblin, causing an opponent to lose 1 life and you to gain 1 life.
Repeat from step 9.

Infinite lifegain

Infinite lifegain triggers

Infinite lifeloss

Sling-Gang Lieutenant

Cast Doomsday by paying {B}{B}{B}, searching your library and graveyard for Torch Courier, Kiki-Jiki, Goblin Firestarter, Brazen Buccaneers and Conspicuous Snoop, exiling all other cards from your graveyard and library, and then placing the remaining cards on top of your library in the order previously listed and losing half your life, rounded up.
Activate Grenzo by paying {2}, putting Conspicuous Snoop into your graveyard and then onto the battlefield.
Cast Torch Courier from the top of your library by paying {R}.
Activate Torch Courier by sacrificing it, giving Conspicuous Snoop haste until end of turn.
Activate Conspicuous Snoop using Kiki-Jiki's ability by tapping it, creating a token copy of Conspicuous Snoop with haste.
Repeat step 5 with the new Conspicuous Snoop token an arbitrarily large amount of times.
Activate Grenzo by paying {2}, putting Brazen Buccaneers into your graveyard and then onto the battlefield.
Brazen Buccaneers enters the battlefield, revealing Kiki-Jiki, putting a +1/+1 counter on Brazen Buccaneers and putting Kiki-Jiki into your graveyard.
Activate a Conspicuous Snoop using Goblin Firestarter's ability by sacrificing it, dealing 1 damage to any target.
Repeat from step 9.

Goblin Firestarter

Combos with "Torch Courier"