The Zombie Cat doesn't have a -1/-1 counter on it and has base toughness 2 or greater.
Steps
Activate
Thermopod by sacrificing the Zombie Cat, adding .
When the Zombie Cat dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
When the Zombie Cat enters,
Olag and Miau's first and second abilities trigger.
Resolve the first trigger, putting a +1/+1 counter on the Zombie Cat.
Resolve the second trigger, putting a +1/+1 counter on either a Zombie or Cat you control.
Repeat.
Notes
You can use either
Olag and Miau trigger to put a +1/+1 counter on the Zombie Cat. The other ability can put the counter on any Zombie or Cat you control depending on which trigger is left.
Results
Infinite +1/+1 counters on certain creatures.
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinite red mana.
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.