Eirdu, Carrier of Dawn
Phantom Train
Strangleroot Geist

   Prerequisites

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

   Steps

How does this combo work?
1
Activate Phantom Train by sacrificing Strangleroot Geist
2
When Strangleroot Geist dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3
Resolve the Phantom Train ability.
4
Activate Phantom Train by sacrificing Strangleroot Geist
5
When Strangleroot Geist dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
6
Strangleroot Geist 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 Phantom Train 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
Tayam, Luminous Enigma
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