Repercussion + Barbed Servitor + Pariah's Shield

Repercussion

Barbed Servitor

Pariah's Shield

How it works

1. Deal damage to Barbed Servitor.
2. Barbed Servitor and Repercussion trigger.
3. Resolve the Barbed Servitor trigger, causing an opponent to lose life equal to the damage dealt.
4. Resolve the Repercussion trigger, dealing damage to Barbed Servitor instead of you due to Pariah's Shield.
5. Repeat from step 2.