Sorcerer's Broom, Krark-Clan Ironworks, and Stridehangar Automaton

Prerequisites

• Sorcerer's Broom on the battlefield
• Krark-Clan Ironworks on the battlefield
• Stridehangar Automaton on the battlefield
• at most available

Steps

1. Use Krark-Clan Ironworks to sacrifice another creature, or sacrifice a permanent by any other method
2. Sorcerer's Broom triggers, causing you to pay to create two creature tokens due to Stridehangar Automaton
3. Activate Krark-Clan Ironworks twice by sacrificing the tokens, adding
4. Sorcerer's Broom triggers twice, and the Sorcerer's Broom token triggers once
5. Resolve all but one trigger, choosing not to pay
6. Resolve the final trigger, causing you to pay to create two creature tokens
7. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite colorless mana
• Infinite creature tokens