Calamity triggers, creating a tapped and attacking copy of
Port Razer, and repeating the process once for any nonlegendary creature that saddled
Calamity this turn.
Deal combat damage using the
Port Razer token(s).
Each
Port Razer who has not attacked the opponent this turn triggers, causing you to untap each creature you control and to get that many additional combat phases after this one.
Repeat from step 2 each combat phase.
Results
Infinite combat damage.
Infinite combat phases.
Infinite copies of nonlegendary creatures you control.
Infinite creature tokens.
Infinite creature ETB.
Infinite mana creatures you control can produce.
Infinite untap of creatures you control.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Metadata
Bracket tag
SpicyBracket 3-4+
Probably 3 or 4, but hard to classify
1
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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.