This is another combo that produces infinite storm. It does not produce infinite mana, which is something to be acutely aware of.

While Birgi, God of Storytelling is already a great storm-pickup, and Runaway Steam-Kin is a house in the red aggro deck, Grinning Ignus's existence in the cube is for the Ignus combo. The general idea of the combo is that an Ignus on the battlefield can activate its ability and be re-cast if an extra mana is generated during the process. If it's possible to generate the extra mana, Ignus can be cast and returned ad infinitum.

Runaway Steam-Kin may require a little extra mana to get going, since it can only generate the extra mana if it has triggered for three red spells. Once it has enough counters to activate once, it can use the next three Ignus casts to restore the counters and repeat the process.

The infamous twin combo shows up in many shapes and colors in the cube. The core of the twin combo is using an infinite loop to create an arbitrarily large number of creatures to attack and win the game with.

This combo needs a duplicator and a target. There are several of both in the cube, but not all pairs work together.

A duplicator needs to be able to make a copy of the target. The duplicator in the cube are Splinter Twin, Kiki-Jiki, Mirror Breaker, and (for the cat only) Saheeli Rai. The target need to do something that resets the duplicator, like Deceiver Exarch, Pestermite, Restoration Angel, Felidar Guardian, and Zealous Conscripts.

Palinchron is the core piece of package that typically represents infinite mana or infinite storm. The combo is typically central to a storm deck but can be useful with any other mana dump.

If you draft Palinchron, you should be looking to pick up High Tide, Heartbeat of Spring, or Sneak Attack to complete the combo. Playing and activating Palinchron requires eleven mana total, four of it blue. If you can generate twelve mana with seven or fewer lands, you'll net at least one mana each time you play and activate the ability to return Palinchron to hand.

The math becomes a little different with Sneak Attack. You won't accumulate storm using this method, but it costs only five mana to sneak Palinchron in and return it to hand and you get to untap seven lands each time.