Crovax, Ascendant Hero + Grim Poppet + Painter's Servant + Antler Skulkin + Ashnod's Altar

Prerequisites

• "White" chosen with Painter's Servant.

Steps

1. 1Activate Grim Poppet by removing a -1/-1 counter from it, targeting another creature.
2. 2Repeat until Grim Poppet has no -1/-1 counters on it.
3. 3Activate Antler Skulkin by paying , giving Grim Poppet persist until end of turn.
4. 4Activate Ashnod's Altar by sacrificing Grim Poppet, adding .
5. 5Grim Poppet dies, triggering its persist ability, returning it from your graveyard to the battlefield with a total of four -1/-1 counters on it.
6. 6Repeat.

Effects

• Infinite -1/-1 counters
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers