Is Phyrexian Obliterator good in Commander?

Phyrexian Obliterator in Commander — Combos, Decks & Price

Phyrexian Obliterator is one of the most punishing blockers ever printed — any source that deals it damage forces the opponent to sacrifice that many permanents, which means attacking into it is almost always catastrophic. The cost, four black mana pips, locks it out of most multicolor shells entirely, but Brimaz, Blight of Oreskos and other mono-black commanders pay that price without blinking.

Best Commanders

Commanders with the highest synergy

01

Brimaz, Blight of Oreskos

51.0% of decks · synergy 0.49

Brimaz, Blight of Oreskos proliferates -1/-1 counters and fields a board of Phyrexian tokens, and Phyrexian Obliterator slots in as the threat that makes combat math impossible — opponents who swing through it lose a stack of permanents, and those who don't give Brimaz free turns to spread the infection.

02

Captain N'ghathrod

46.7% of decks · synergy 0.42

Captain N'ghathrod mills and steals, and Phyrexian Obliterator earns its slot by being a creature so threatening that opponents rarely block or attack freely into it, buying N'ghathrod the tempo needed to run the mill-and-reanimate engine.

03

Phage the Untouchable

43.4% of decks · synergy 0.32

Phage the Untouchable decks want redundant ways to make combat impossible, and Phyrexian Obliterator delivers — the sacrifice trigger from any damage source means opponents face two separate instant-loss threats in the red zone, neither of which they can afford to ignore.

04

Tergrid, God of Fright

40.7% of decks · synergy 0.30

Tergrid, God of Fright converts every forced sacrifice into a permanent under your control, so Phyrexian Obliterator's damage trigger doesn't just punish attackers — it hands Tergrid a pile of stolen lands and creatures every time someone miscalculates combat.

05

Valgavoth, Terror Eater

38.3% of decks · synergy 0.27

Valgavoth, Terror Eater grows on opponents' life loss and rewards a strategy where opponents are afraid to act, and Phyrexian Obliterator is exactly the kind of board presence that keeps attackers home and lets Valgavoth accumulate counters without resistance.

Format Analysis

Where it lives, where it can’t

Format	Verdict
commander	legal
legacy	legal
modern	legal
pioneer	legal
standard	not legal
vintage	legal
pauper	not legal
oathbreaker	legal

In Commander, Phyrexian Obliterator is a mono-black staple — the four-pip cost is a real constraint that locks it out of most two- and three-color builds, but in dedicated black shells it's one of the best five-drops available, combining a 5/5 body with a triggered sacrifice punishment that warps the entire combat step. In Legacy, Phyrexian Obliterator has seen play in mono-black devotion strategies where it pairs with Cavern of Souls to dodge countermagic and applies immediate pressure. Modern is its most competitive home outside Commander — the devotion count fuels Gary (Gray Merchant of Asphodel) and the clock it represents forces fast answers that black-heavy midrange decks are happy to exploit. Pioneer supports it on paper, though the format's removal suite is robust enough that it requires more protection than it gets in Modern.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Phyrexian Obliterator has historically been one of the more expensive mono-black staples given its scarcity and the fact that it's genuinely played across multiple formats — check Scryfall or TCGPlayer for the current market price before buying. Multiple printings have brought the price down from its peak, so if you've been waiting to pick one up, the window is better than it used to be.