Felidar Guardian + Dual Nature

Prerequisites

• You control and own at least one mana-producing permanent that enters the battlefield untapped.

Steps

1. 1Cast Felidar Guardian by paying .
2. 2Felidar Guardian enters the battlefield, triggering itself and Dual Nature's first ability.
3. 3Resolve Felidar Guardian's ability, blinking a mana-producing permanent you control.
4. 4Activate that permanent by tapping it, adding at least .
5. 5Resolve Dual Nature's first ability, creating a token copy of Felidar Guardian.
6. 6When the token Felidar Guardian enters the battlefield, it triggers, blinking the nontoken Felidar Guardian.
7. 7When the Felidar Guardian leaves and enters the battlefield, it triggers Dual Nature's second ability, Dual Nature's first ability, and its own ability.
8. 8Resolve Dual Nature's second ability, exiling all tokens named Felidar Guardian.
9. 9Repeat from step 3 any number of times.
10. 10Once you have infinite mana, you may blink any permanents you control any number of times in step 3.

Effects

• Infinite blinking of permanents
• Infinite creature ETB
• Infinite creature LTB
• Infinite mana lands you control can produce
• Infinite mana permanents you control that enter the battlefield untapped can produce