Scarecrone, Su-Chi, Voltaic Construct, and Ashnod's Altar

Prerequisites

• Scarecrone on the battlefield
• Su-Chi on the battlefield
• Voltaic Construct on the battlefield
• Ashnod's Altar on the battlefield
• Scarecrone does not have summoning sickness

Steps

1. Activate Ashnod's Altar by sacrificing Su-Chi, adding
2. When Su-Chi dies, it triggers, adding
3. Activate Scarecrone's second ability by paying and tapping it, returning Su-Chi to the battlefield from your graveyard
4. Activate Voltaic Construct by paying , untapping Scarecrone
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers