Antler Skulkin, Ashnod's Altar, and Arcbound Shikari

Prerequisites

• Antler Skulkin on the battlefield
• Ashnod's Altar on the battlefield
• Arcbound Shikari on the battlefield
• available

Steps

1. Activate Antler Skulkin by paying , giving Arcbound Shikari persist until end of turn
2. Activate Ashnod's Altar by sacrificing Arcbound Shikari, adding
3. When Arcbound Shikari dies, its modular and persist abilities trigger
4. Resolve the modular trigger, putting all +1/+1 counters on Arcbound Shikari onto another artifact creature you control
5. Resolve the persist trigger, returning Arcbound Shikari from your graveyard to the battlefield with one +1/+1 counter on it due to its modular ability
6. When Arcbound Shikari enters the battlefield, it triggers, putting a +1/+1 counter on each other artifact creature you control
7. Repeat

Results

• Infinite +1/+1 counters on each artifact creature you control except Arcbound Shikari
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers