Riku of Two Reflections + Worldgorger Dragon

Riku of Two Reflections

Worldgorger Dragon

How it works

1. Cast Worldgorger Dragon by paying 3.
2. Worldgorger Dragon enters the battlefield, triggering its first ability and Riku's second ability.
3. Holding priority, activate any number of permanents by tapping them, adding at least 1.
4. Resolve the Riku trigger, causing you to pay to create a token copy of Worldgorger Dragon.
5. The token Worldgorger Dragon enters the battlefield, triggering its first ability, exiling all other permanents you control.
6. The nontoken Worldgorger Dragon leaves the battlefield, triggering its second ability, returning nothing from exile to the battlefield.
7. Resolve the Worldgorger Dragon trigger from step 2, exiling the token Worldgorger Dragon.
8. The token Worldgorger Dragon leaves the battlefield, triggering its second ability, returning all permanents exiled with it to the battlefield.
9. Repeat from step 2.

This fascinating loop turns Riku of Two Reflections into a factory for infinite mana and permanent triggers by exploiting Worldgorger Dragon's cyclical entry and exit. When you cast Worldgorger Dragon, Riku's creature-copying ability lets you pay to spawn a token copy while holding priority to tap your permanents for mana. That token immediately enters and exiles everything you control—including the original dragon—which in turn sends the token packing and brings your lands and other permanents right back untapped. By repeating this dance, you continually refresh your mana sources and trigger any entering- or leaving-the-battlefield effects infinitely.