Eirdu, Carrier of Dawn
Bloodflow Connoisseur
Hancock, Ghoulish Mayor

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield and Hancock without a +1/+1 counter on it on the battlefield).

   Steps

How does this combo work?
1
Activate Bloodflow Connoisseur by sacrificing Hancock
2
When Hancock dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3
Resolve the Bloodflow Connoisseur ability.
4
Activate Bloodflow Connoisseur by sacrificing Hancock
5
When Hancock dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6
Hancock enters and dies as a state-based action due to having 0 toughness. Its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
7
Resolve the Bloodflow Connoisseur ability from step 4.
8
Repeat from step 4.

   Results

What do I get from this combo?
Infinite +1/+1 counters on a creature
Infinite ETB
Infinite LTB
Infinite death triggers
Infinite sacrifice triggers
Celes, Rune Knight
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