Resolve the final trigger, causing you to pay ({3} magic symbol) to create two creature tokens.
Repeat from step 3.
Notes
If you sacrifice a creature to start using
Krark-Clan Ironworks, the starting cost is reduced to ({1} magic symbol) . You can instead use a permanent that can sacrifice itself (like a Treasure token) or another method to sacrifice a permanent (like Braids, Arisen Nightmare).
Results
Infinite colorless mana.
Infinite creature tokens.
Infinite ETB.
Infinite LTB.
Infinite death triggers.
Infinite sacrifice triggers.
Metadata
In 14 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).