Kelsien, the Plague + Thornbite Staff

Kelsien, the Plague

Thornbite Staff

How it works

1. Give Kelsien deathtouch by any method.
2. Activate Kelsien by tapping it, dealing 1 damage to target creature and destroying it due to Kelsien's deathtouch.
3. The creature dies, triggering Kelsien twice.
4. Resolve the first Kelsien trigger, causing you to get an experience counter.
5. Resolve the second Kelsien trigger, untapping it.
6. Repeat.
7. You may also repeat this loop any time a creature enters the battlefield under an opponent control.