Star of Extinction by paying ({5} magic symbol) ({R} magic symbol) ({R} magic symbol) , destroying target land, and then dealing 20 damage to each creature and each planeswalker.
For each creature opponents control that is dealt excess damage,
Fall of Cair Andros triggers, creating a 0/0 Army if you dont control one, and putting a number of +1/+1 counters on an Army you control equal to the excess damage.
Results
Infinite +1/+1 counters on a creature.
Near-infinite damage to creatures.
Metadata
Bracket tag
OddballBracket 2-3+
Probably 2 or 3, but hard to classify
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5
1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.