Is Biophagus good in Commander?

Biophagus in Commander — Combos, Decks & Price

Biophagus puts a +1/+1 counter on any creature you cast with the spent mana — effectively discounting your next tyranid by one, then the next, compounding across a full turn of casting. In a dedicated Tyranid shell, especially under The Swarmlord, that snowball effect makes it one of the strongest two-drops in the archetype.

Best Commanders

Commanders with the highest synergy

01

The Swarmlord

76.0% of decks · synergy 0.71

Biophagus is a staple in The Swarmlord decks because the counter it places triggers Swarmlord's draw ability, and the cost reduction chains directly into casting more Tyranids off the same mana — the engine practically runs itself.

02

Magus Lucea Kane

55.8% of decks · synergy 0.50

Magus Lucea Kane's copy ability doubles the output of X-cost Tyranids, and Biophagus shaving mana off each successive cast means you get to the big X-spells faster while still triggering Kane's draw along the way.

03

Me, the Immortal

30.5% of decks · synergy 0.25

Me, the Immortal cares about Tyranids entering the battlefield repeatedly, and Biophagus smooths the mana curve enough that you can chain multiple threats in a single turn rather than spacing them across several.

04

Volrath, the Shapestealer

24.2% of decks · synergy 0.23

Volrath, the Shapestealer can copy Biophagus to steal its activated ability, then use the counter it places on an opposing creature as a vector for Volrath to shift into that creature at instant speed.

05

Agatha of the Vile Cauldron

22.6% of decks · synergy 0.21

Agatha of the Vile Cauldron exiles creatures with activated abilities to grant those abilities to her creatures, and Biophagus's tap ability stapled onto an already-wide board turns every attacker into a cost-reduction engine.

Format Analysis

Where it lives, where it can’t

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

Biophagus is legal in Commander, Legacy, Vintage, and Oathbreaker, but Commander is effectively its only competitive home — the Tyranid tribe simply doesn't exist outside of 40-life singleton. Legacy and Vintage have no shortage of broken two-drops, and a conditional cost-reduction creature that requires tribal setup isn't competing there. In Commander, it's a staple in any Tyranid build that can reliably cast multiple creatures per turn, which is exactly what the archetype wants to do. Oathbreaker is a theoretical option if a Tyranid-adjacent planeswalker ever becomes the anchor, but in practice Biophagus lives and dies in Commander.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data for Biophagus isn't currently available in our index, so check Scryfall or TCGPlayer for the live number before buying. As a tribal-specific rare with a narrow but dedicated Commander audience, it typically sits in the budget-to-mid range — worth picking up for any Tyranid build regardless of price.