Ambitious Dragonborn without a -1/-1 counter on it).
Notable Prerequisites
You control a creature with power X or greater, or you have a creature card in your graveyard with power X or greater.
Steps
Activate
Bloodthrone Vampire by sacrificing
Ambitious Dragonborn.
When
Ambitious Dragonborn dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to its replacement effect.
Resolve the
Bloodthrone Vampire ability.
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
ExhibitionBracket 1+
For any deck
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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.