Eirdu, Carrier of Dawn
Ashnod's Altar
Sightless Ghoul

   Prerequisites

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

   Steps

How does this combo work?
1
Activate Ashnod's Altar by sacrificing Sightless Ghoul
2
When Sightless Ghoul dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3
Activate Ashnod's Altar by sacrificing Sightless Ghoul
4
When Sightless Ghoul dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5
Repeat.

   Results

What do I get from this combo?
Infinite ETB
Infinite LTB
Infinite colorless mana
Infinite death triggers
Infinite sacrifice triggers
Ghave, Guru of Spores
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