Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight, Bloodflow Connoisseur, and Realm Seekers

Prerequisites

• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight on the battlefield
• Bloodflow Connoisseur on the battlefield
• Realm Seekers on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Realm Seekers
2. When Realm Seekers dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect
3. Resolve the Bloodflow Connoisseur ability
4. Repeat

Results

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