Kiki-Jiki and combos (EDH / Commander)

Kiki-Jiki, Mirror Breaker has a lot of combos that are easy to set up. I can't go through all of them, but I can list the most common ones that you'll see.

Zealous Conscripts: Classic combo. Kiki-Jiki copies the conscripts, and the conscripts target Kiki-Jiki, untapping him. Do this an infinite amount of times, and then attack with all the copies.

Combat Celebrant: This is very similar to the Zealous Conscripts combo. Copy Combat Celebrant, then have the copy attack and exert (Kiki-Jiki untaps). At the end of this combat phase, have Kiki-Jiki copy the Combat Celebrant again. Repeat until everyone is dead.

Lightning Crafter: This one is easy to tutor up with Goblin Matron and Goblin Recruiter. To start it, you'll need a sacrifice outlet (Ashnod's Altar, Skirk Prospector), and Kiki-Jiki on the battlefield. Start by casting Lightning Crafter. In response to the champion trigger, use Kiki-Jiki to copy Lightning Crafter (Because this whole combo happens at instant speed, the champion ability will never resolve). Get the copy to champion Kiki-Jiki, to exile him. The copy has haste, so have it deal 3 damage to a player. Now sacrifice the copy. Kiki-Jiki re-enters the battlefield (untapped) and you can repeat these steps.

Umbral Mantle + Priest of Urabrask: This combo can also work with Sword of the Paruns and Emrakul's Hatcher. Use the mana from the priest (or the Eldrazi tokens), to untap Kiki-Jiki. Create infinite copies of the Priest, and attack.

Thornbite Staff + Mogg Fanatic: There are many more combos with Thornbite Staff, but I like this one the best. With the staff equipped to Kiki-Jiki, copy the fanatic, and then sacrifice the copy. You'll deal one damage, and Kiki-Jiki will untap.