Valentin, Dean of the Vein + Pentavus + Zulaport Cutthroat + Krark-Clan Ironworks
Valentin, Dean of the Vein
Pentavus
Zulaport Cutthroat
Krark-Clan Ironworks
Requires
Valentin, Dean of the Vein // Lisette, Dean of the Root must be on the battlefield.
Pentavus must be on the battlefield.
Zulaport Cutthroat must be on the battlefield.
Krark-Clan Ironworks must be on the battlefield.
Dean of the Root.
Pentavus has at least two +1/+1 counters on it.
Mana needed: 
Steps
- Activate Pentavus' first ability by paying and removing a +1/+1 counter from it, creating a 1/1 Pentavite artifact creature token.
- Activate Krark-Clan Ironworks by sacrificing the Pentavite, adding .
- The Pentavite dies, triggering Zulaport Cutthroat, causing each opponent to lose 1 life and you to gain 1 life.
- Lisette triggers, putting a +1/+1 counter on each creature you control.
- Repeat.
Results
Infinite +1/+1 counters. Infinite colorless mana. Infinite death triggers. Infinite ETB. Infinite lifegain. Infinite lifegain triggers. Infinite lifeloss. Infinite LTB. Infinite sacrifice triggers.
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