Mister Gutsy trigger, creating a number of Junk tokens equal to the number of +1/+1 counters that were on it.
If you created a Junk token, activate
Krark-Clan Ironworks by sacrificing a Junk, adding ({C} magic symbol) ({C} magic symbol) .
Resolve the
Nim Deathmantle trigger, causing you to pay ({4} magic symbol) to return
Mister Gutsy from your graveyard to the battlefield, and attaching
Nim Deathmantle to it.
When
Mister Gutsy enters the battlefield,
Captain Kathryn Janeway trigger, revealing the top card of your library, putting the card back on top of your library, and then putting a +1/+1 counter on
Mister Gutsy.
Repeat.
Results
Infinite ETB.
Infinite LTB.
Infinite death triggers.
Infinite sacrifice triggers.
Metadata
In 0 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).