Combos:

Krenko combos:

• Krenko, Mob Boss + Thornbite Staff + Skirk Prospector = Infinite Goblin tokens
• Krenko, Mob Boss + Thornbite Staff + any sac outlet = Infinite ETB Triggers, Infinite Death Triggers, & Infinite Damage

• Kiki-Jiki Combos:
  Kiki-Jiki, Mirror Breaker + Lightning Crafter + any sac outlet = Infinite ETB Triggers, Infinite Death Triggers, & Infinite Damage
  This combo use Kiki-Jiki's ability to copy Lightning Crafter. The copy champions Kiki-Jiki and is then sacrificed to any sac outlet. Kiki-Jiki returns to the battlefield untapped, and process is repeated. If you have a haste enabler, the copies can tap to deal damage before being sacrificed.
• Kiki-Jiki, Mirror Breaker + Thornbite Staff + any other creature + any sac outlet = Infinite ETB Triggers & Death Triggers
  This combo uses a Thorbite Staff equipped Kiki-Jiki's ability to copy any creature, get the value one whatever creature it is, and then sacrifice it to any sac outlet, which untaps Kiki-Jiki to repeat the process.
• Kiki-Jiki, Mirror Breaker + Conspicuous Snoop + Goblin Recruiter = Infinite Conspicuous Snoops.
• Kiki-Jiki, Mirror Breaker + Conspicuous Snoop + Goblin Recruiter + any sac outlet = Infinite goblins, etbs, death triggers & mana. 

Combat Celebrant Combos
These combos use Kiki-Jiki's ability to make a copy of Combat Celebrants between each attack phase, and then uses Conscript's 'Untap' ability to untap Kiki-Jiki... and everyone else.

• Kiki-Jiki, Mirror Breaker + Combat Celebrant = Infinite Celebrant Copies, Infinite Attack Phases, & Infinite Untapping
• Kiki-Jiki, Mirror Breaker + Combat Celebrant + Krenko, Mob Boss = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Goblins, & Infinite Untapping
• Kiki-Jiki, Mirror Breaker + Combat Celebrant + Goblin Sharpshooter/Lightning Crafter = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Damage, & Infinite Untapping
• Kiki-Jiki, Mirror Breaker + Combat Celebrant + Skirk Fire Marshal + 3 Other Goblins = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Damage, & Infinite Untapping

Splinter Twin Combos
Goblin Sharpshooter Combo
This combo uses the Twin's duplication ability to create a copy of Goblin Sharpshooper, and then uses a sacrifice outlet to create infinite ETB & Death triggers.

• Splinter Twin + Goblin Sharpshooter + Any Sac Outlet = Infinite Death & ETB Triggers

Combat Celebrant Combos
These combos use Twin's duplication ability to create a copy of Combat Celebrant before each attack phase, and then uses Conscript's 'Untap' ability to untap everyone else.

• Splinter Twin + Combat Celebrant = Infinite Celebrant Copies, Infinite Attack Phases, & Infinite Untapping
• Splinter Twin + Combat Celebrant + Krenko, Mob Boss = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Goblins, & Infinite Untapping
• Splinter Twin + Combat Celebrant + Goblin Sharpshooter/Lightning Crafter = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Damage, & Infinite Untapping
• Splinter Twin + Combat Celebrant + Skirk Fire Marshal + 4 Other Goblins = Infinite Celebrant Copies, Infinite Attack Phases, Infinite Damage, & Infinite Untapping