Venser, Corpse Puppet + Tainted Observer + Krark-Clan Ironworks
Venser, Corpse Puppet
Tainted Observer
Krark-Clan Ironworks
Requires
Venser, Corpse Puppet must be on the battlefield.
Tainted Observer must be on the battlefield.
Krark-Clan Ironworks must be on the battlefield.
You have a way to cause a creature to enter the battlefield under your control.
Mana needed: 
Steps
- Cause a creature to enter the battlefield under your control.
- Tainted Observer triggers, causing you to pay to proliferate.
- Venser triggers, creating a legendary 3/3 The Hollow Sentinel artifact creature token.
- The Hollow Sentinel enters the battlefield, triggering Tainted Observer.
- Holding priority, activate Krark-Clan Ironworks by sacrifcing The Hollow Sentinel, adding
. - Resolve the Tainted Observer trigger, causing you to pay to proliferate.
- Repeat from step 3.
Results
Infinite death triggers. Infinite ETB. Infinite LTB. Infinite proliferate. Infinite sacrifice triggers.
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