Eirdu, Carrier of Dawn
Umbral Collar Zealot
Arcbound Condor

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield (Eirdu as Isilu, Carrier of Twilight on the battlefield).

   Steps

How does this combo work?
1
Activate Umbral Collar Zealot by sacrificing Arcbound Condor.
2
When Arcbound Condor dies, its modular ability and persist ability trigger.
3
Resolve the modular trigger, putting Arcbound Condor's +1/+1 counters on another artifact creature.
4
Resolve the persist trigger, returning Arcbound Condor from your graveyard to the battlefield. It will not have a -1/-1 counter on it due to its modular ability.
5
Resolve the Umbral Collar Zealot ability.
6
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite sacrifice triggers
Infinite death triggers
Infinite +1/+1 counters on certain creatures
Infinite surveil
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