All-Out Assault + Felidar Guardian + Splinter Twin

All-Out Assault

Felidar Guardian

Splinter Twin

How it works

1. Cast All-Out Assault by paying 2.
2. When All-Out Assault enters the battlefield, it triggers, causing you to get an additional combat and main phase after this one.
3. Move to your next combat phase, and declare any creature as an attacker.
4. All-Out Assault triggers, untapping all creatures you control.
5. Move to your next main phase.
6. Activate Felidar Guardian by tapping it, creating a token copy of it with haste.
7. When the Felidar Guardian token enters the battlefield, Felidar Guardian triggers, blinking All-Out Assault.
8. Repeat from step 2.