Mister Gutsy doesn't have a +1/+1 counter on it available.
Steps
Activate
Krark-Clan Ironworks by sacrificing
Mister Gutsy, adding .
When
Mister Gutsy dies, its second ability and
Nim Deathmantle trigger.
Resolve the
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 .
Resolve the
Nim Deathmantle trigger, causing you to pay 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 creature ETB.
Infinite creature LTB.
Infinite death triggers.
Infinite creature sacrifice triggers.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
1
2
3
4
5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.