Evolution Witness + Tarrian's Soulcleaver + Welding Jar

Evolution Witness

Tarrian's Soulcleaver

Welding Jar

How it works

1. Cast Welding Jar by paying 0.
2. Activate Welding Jar by tapping and sacrificing it.
3. Tarrian's Soulcleaver triggers, putting a +1/+1 counter on Evolution Witness.
4. Evolution Witness triggers, returning Welding Jar from your graveyard to your hand.
5. Resolve the Welding Jar ability, regenerating target artifact.
6. Repeat.