Blightbeetle, Defiant Salvager, and Donate

Prerequisites

• Blightbeetle on the battlefield
• Defiant Salvager on the battlefield
• Donate in hand
• available

Steps

1. Use Donate to give Blightbeetle to an opponent Activate Defiant Salvager by sacrificing the undying creature
2. When the undying creature dies, its undying ability triggers, returning itself from your graveyard to the battlefield without a +1/+1 counter on it due to Blightbeetle
3. Resolve the Defiant Salvager ability
4. Repeat from step 2

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers