if all three of the persist or undying creatures have a -1/-1 or +1/+1 counter on them respectively available.
Steps
If any of the creatures with persist or undying do not have a -1/-1 or +1/+1 counter on them respectively, activate
Thermopod by sacrificing the creature, adding .
When the creature dies, its persist or undying ability triggers, returning the creature from your graveyard to the battlefield with either a -1/-1 or +1/+1 counter on it.
Repeat from step 1 until all three persist or undying creatures have a counter on them.
Activate Data by paying and removing a counter from each of the persist or undying creatures, causing you to draw a card.
Repeat.
Results
Infinite card draw.
Infinite draw triggers.
Near-infinite creature ETB.
Near-infinite creature LTB.
Near-infinite creature sacrifice triggers.
Near-infinite death triggers.
Near-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.