Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Morselhoarder + Ashnod's Altar
Infinite LTB, Infinite ETB, Infinite colored mana, Infinite sacrifice triggers, Infinite death triggers, Infinite colorless mana
If Morselhoarder has any -1/-1 counters on it, activate it by removing a -1/-1 counter from it, adding one mana of any color.
Repeat step 1 as necessary until Morselhoarder has no -1/-1 counters on it.
Activate Ashnod's Altar by sacrificing Morselhoarder.
When Morselhoarder dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Repeat.
Component Cards
How It Works
If Morselhoarder has any -1/-1 counters on it, activate it by removing a -1/-1 counter from it, adding one mana of any color.
Repeat step 1 as necessary until Morselhoarder has no -1/-1 counters on it.
Activate Ashnod's Altar by sacrificing Morselhoarder.
When Morselhoarder dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
Repeat.