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Reef Worm

Creature — Worm

When this creature dies, create a 3/3 blue Fish creature token with "When this token dies, create a 6/6 blue Whale creature token with 'When this token dies, create a 9/9 blue Kraken creature token.'"

CMC
4
Mana cost
{3}{U}
Color identity
U
Rarity
rare
Set
Masters 25
Price
$0.32
EDHREC rank
#5134
Buy on TCGplayer
Reef Worm card art
Reef Worm turns every removal spell aimed at it into a problem — die as a 1/1, replace it with a 3/3; die again, get a 6/6; die a third time, produce a 9/9 that draws a card when it dies. The cost is four mana for a 1/1 body that does nothing the turn it enters, which means it needs a shell that can protect it or exploit the death triggers repeatedly — Enduring Renewal loops and Adrix and Nev, Twincasters doubling every token that pops off are exactly that shell.

Best Commanders

Commanders with the highest synergy

01
Adrix and Nev, Twincasters

Adrix and Nev, Twincasters

49.9% of decks · synergy 0.46

Adrix and Nev, Twincasters doubles every token Reef Worm produces, so the 3/3 Fish becomes two 3/3s and the 6/6 Whale becomes two 6/6s — the exponential payoff is immediate and requires no extra setup beyond the commander already being in play.

02
Volo, Guide to Monsters

Volo, Guide to Monsters

39.4% of decks · synergy 0.36

Volo, Guide to Monsters copies creatures on cast, and Reef Worm is a Worm — a creature type Volo rarely sees elsewhere — so you reliably trigger the copy ability and start two parallel death-trigger chains from a single four-mana investment.

03
Brudiclad, Telchor Engineer

Brudiclad, Telchor Engineer

31.9% of decks · synergy 0.31

Brudiclad, Telchor Engineer can convert an army of token creatures into copies of Reef Worm's largest spawn, then swing with a board of 6/6 Whales or 9/9 Krakens — one well-timed Reef Worm death sets the template for everything else.

04
Araumi of the Dead Tide

Araumi of the Dead Tide

25.9% of decks · synergy 0.25

Araumi of the Dead Tide's Encore ability reanimates Reef Worm three times at end of combat, creating three separate death-trigger chains that immediately begin stacking Fish, Whales, and Krakens across the table.

05
Xavier Sal, Infested Captain

Xavier Sal, Infested Captain

20.3% of decks · synergy 0.19

Xavier Sal, Infested Captain cares about creating Treasure and creature tokens alike, and Reef Worm's cascading spawn gives the deck a repeatable token source that scales up in power each time opponents answer it.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander legal
legacy legal
modern legal
pioneer not legal
standard not legal
vintage legal
pauper not legal
oathbreaker legal

Commander is where Reef Worm actually lives — the format's slower pace gives it time to die and re-die, and the multiplayer threat density means opponents are incentivized to kill it, which is exactly what you want. In Legacy and Vintage it's technically legal but unplayable; a four-mana 1/1 with a conditional payoff doesn't compete with those formats' speed. Reef Worm is not legal in Pioneer, Standard, or Pauper, which covers the formats where incremental value creatures see casual competitive play. Oathbreaker is a reasonable home if your planeswalker supports a token or sacrifice theme, but the smaller deck size and tighter game length mean the full chain rarely completes.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.32 bulk tier

At $0.32, Reef Worm is deep bulk — you can pick up a copy from any dollar bin or complete an order with it as filler. The price is stable because supply is wide and the card sees virtually no demand outside Commander, so don't expect movement in either direction.

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Sources

Mentioned

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Updated . Data from Scryfall, EDHREC, and Commander Spellbook.