Sneak Attack + Mardu Warshrieker + Cloudstone Curio + Kobolds of Kher Keep

Sneak Attack

Mardu Warshrieker

Cloudstone Curio

Kobolds of Kher Keep

How it works

1. Activate Sneak Attack by paying , putting Mardu Warshrieker onto the battlefield.
2. Mardu Warshrieker and Cloudstone Curio each trigger.
3. Resolve the Mardu Warshrieker trigger, adding .
4. Resolve the Cloudstone Curio trigger, returning Kobolds of Kher Keep to your hand.
5. Cast Kobolds of Kher Keep by paying 0.
6. Cloudstone Curio triggers, returning Mardu Warshrieker to your hand.
7. Repeat.