Moritte of the Frost, and Bloodflow Connoisseur

Prerequisites

• Moritte of the Frost on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Moritte of the Frost
2. When Moritte of the Frost dies, it triggers its persist ability, returning itself to the battlefield as a copy of the creature with persist with two +1/+1 counters and one -1/-1 counter on it
3. Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action
4. Resolve the activated ability from step 1, putting a +1/+1 counter on Bloodflow Connoissuer
5. Repeat

Results

• Infinite +1/+1 counters on Bloodflow Connoisseur
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers