Krav by paying ({B} magic symbol) and sacrificing all Armies you control, or one other creature if you don't control an Army.
When the sacrificed creature(s) die,
Pitiless Plunderer triggers that many times, creating that many Treasure tokens.
Resolve
Krav's ability, causing an opponent to draw a card and gain 1 life for each creature sacrificed this way, and for you to put that many +1/+1 counters on
Krav.
Orcish Bowmasters triggers for each card drawn this way, dealing that much damage to any target and causing you to gain that much life, then creating a 0/0 Orc Army creature token and put a +1/+1 counter on it for each card drawn.
Activate a Treasure by tapping and sacrificing it, adding ({B} magic symbol) .
Repeat.
Results
Infinite card draw for opponents.
Infinite draw triggers for each opponent.
Near-infinite +1/+1 counters on a creature.
Near-infinite damage.
Near-infinite death triggers.
Near-infinite creature ETB.
Near-infinite lifegain triggers for opponents.
Near-infinite creature LTB.
Near-infinite creature sacrifice triggers.
Metadata
Bracket tag
PowerfulBracket 3+
For strong decks in bracket 3+
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.