Bloodflow Connoisseur + Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Howlgeist

WBG identity

Commander legal

The 3 combo pieces

• Bloodflow Connoisseur
• Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
• Howlgeist

How to execute it

1. Activate Bloodflow Connoisseur by sacrificing Howlgeist
2. When Howlgeist dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Bloodflow Connoisseur by sacrificing Howlgeist
4. When Howlgeist dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve both Bloodflow Connoisseur abilities from step 1 and 3.
6. Repeat.

What the combo produces

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