Mycosynth Fiend
Creature — Phyrexian Horror
This creature gets +1/+1 for each poison counter your opponents have.
- CMC
- 3
- Mana cost
- Color identity
- G
- Rarity
- uncommon
- Set
- New Phyrexia
- Price
- $0.13
- EDHREC rank
- #18156
Mycosynth Fiend enters as a 1/1 and grows by +1/+1 for each poison counter your opponents accumulate, turning a proliferate or infect gameplan into a scaling threat that closes games on its own. The floor is embarrassing, but in the right shell the ceiling is a mid-game finisher that costs two mana.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Mycosynth Fiend earns its keep — infect and proliferate commanders like Atraxa, Praetors' Voice and Vishgraz, the Doomhive generate counters fast enough to make it a legitimate threat by turn four or five. In Legacy and Vintage it's too slow and too fragile to compete; infect decks in those formats want to end the game in one or two swings, not build a beater over multiple turns. Oathbreaker mirrors the Commander read: legal and synergistic in poison-counter shells, irrelevant everywhere else.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.13 bulk tier
At $0.13, Mycosynth Fiend is pure bulk — grab a copy without thinking twice if you're building poison. That price is unlikely to move unless a pushed infect commander drives sudden demand.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.