Boonweaver Giant, Fool's Demise, and Bloodflow Connoisseur

Prerequisites

• Boonweaver Giant on the battlefield
• Fool's Demise on the battlefield
• Bloodflow Connoisseur on the battlefield

Steps

1. Activate Bloodflow Connoisseur by sacrificing Boonweaver Giant When Boonweaver Giant dies, Fool's Demise's first and second ability triggers
2. Resolve the first trigger, returning Boonweaver Giant from your graveyard to the battlefield When Boonweaver Giant enters, it triggers, returning Fool's Demise from your graveyard to the battlefield attached to Boonweaver Giant
3. Resolve the second Fool's Demise ability, doing nothing,
4. Resolve the Bloodflow Connoisseur ability from step 1
5. Repeat

Results

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