Flash + Protean Hulk + Viscera Seer + Zulaport Cutthroat + Karmic Guide + Felidar Guardian

Flash

Protean Hulk

Viscera Seer

Zulaport Cutthroat

Karmic Guide

Felidar Guardian

How it works

1. Cast Flash, put Protean Hulk on the battlefield.
2. Hulk death trigger fetches Karmic Guide and Viscera Seer.
3. Karmic Guide reanimates Hulk.
4. Sacrifice Hulk to Viscera Seer, fetching Felidar Guardian and Zulaport Cutthroat.
5. Felidar Guardian triggers targeting Karmic Guide.
6. Sacrifice Felidar Guardian to Viscera Seer, producing a Cutthroat trigger.
7. Flicker Karmic Guide targeting Felidar Guardian, return Felidar Guardian to the battlefield.
8. Repeat.