Eirdu, Carrier of Dawn
Altar of Dementia
Boss's Chauffeur

   Prerequisites

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

   Steps

How does this combo work?
1
Activate Altar of Dementia by sacrificing Boss's Chauffeur.
2
When Boss's Chauffeur dies, its persist ability and second ability trigger.
3
Resolve the second trigger, creating a number of 1/1 Citizen creature tokens equal to the number of +1/+1 counters that were on Boss's Chauffeur.
4
Resolve the persist trigger, returning Boss's Chauffeur from your graveyard to the battlefield. It'll enter with a number of +1/+1 counters on it equal to the number of creatures you control minus 1 due to its replacement effect.
5
Resolve the Altar of Dementia ability.
6
Repeat.

   Results

What do I get from this combo?
Infinite +1/+1 counters on a creature
Infinite ETB
Infinite LTB
Infinite creature tokens
Infinite death triggers
Infinite mill
Infinite sacrifice triggers
Infinite self-mill
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