Darksteel Angel dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its static effect.
Resolve the
Bloodthrone Vampire ability, giving
Bloodthrone Vampire +2/+2 until end of turn.
Repeat.
Results
Infinite creature ETB.
Infinite creature LTB.
Infinite creature sacrifice triggers.
Infinite death triggers.
Infinitely large creature until end of turn.
Metadata
Bracket tag
OddballBracket 2-3+
Probably 2 or 3, but hard to classify
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1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.