Is Insidious Fungus good in Commander?

Insidious Fungus in Commander — Combos, Decks & Price

Insidious Fungus floods the board with Fungus tokens whenever a creature an opponent controls dies, turning every removal spell and combat trick at the table into fuel for your army. The Mycotyrant shells run it at nearly a 50% inclusion rate for exactly this reason — it does heavy lifting for two mana and never stops generating value.

Best Commanders

Commanders with the highest synergy

01

The Mycotyrant

48.1% of decks · synergy 0.42

The Mycotyrant converts each Fungus token Insidious Fungus generates into a payoff for its own triggered ability, creating a tight loop where opponent creature deaths simultaneously build your board and feed the commander's scaling threat.

02

Six

37.4% of decks · synergy 0.33

Six's discard-matters gameplan often pushes opponents into unfavorable positions, and Insidious Fungus punishes any creature death that follows — turning the table's attrition into a one-sided token advantage.

03

Meren of Clan Nel Toth

24.4% of decks · synergy 0.19

Meren of Clan Nel Toth thrives on creatures dying in bulk, and Insidious Fungus converts the opponent side of that death traffic into tokens that accumulate experience counters or serve as sacrifice fodder themselves.

04

Hogaak, Arisen Necropolis

23.9% of decks · synergy 0.18

Hogaak, Arisen Necropolis wants a full graveyard and bodies to convoke, and Insidious Fungus supplies both angles by generating tokens every time opposing creatures hit the yard alongside your own self-mill engine.

05

Volo, Guide to Monsters

19.8% of decks · synergy 0.17

Volo, Guide to Monsters copies creatures on entry, and a second Insidious Fungus trigger doubles every opponent creature death into a four-token windfall — a disproportionate return for a two-mana slot.

Format Analysis

Where it lives, where it can’t

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

Commander is the native habitat for Insidious Fungus — four opponents mean creature deaths come fast and often, so the token generation compounds across every combat step and removal spell at the table. In 1v1 formats like Modern or Pioneer it sees essentially no competitive play, since the payoff depends on volume of deaths that a single opponent doesn't consistently supply. Legacy and Vintage have faster clocks and more efficient threat-and-answer sequences where a passive two-mana enchantment rarely keeps pace. Insidious Fungus is a Commander card in practice, even if it's technically legal elsewhere.

Key Combos

Combo lines featuring this card

Price Context

Current price

$0.46 bulk tier

At $0.46, Insidious Fungus is deep bulk — easy to pick up as a playset without a second thought. Given its near-50% inclusion rate in The Mycotyrant decks and broad adoption across graveyard and token strategies, there's no reason to expect this to stay a bulk rare long-term, but buy it for the deck slot, not the spec.