Purestrain Genestealer

Creature — Tyranid

This creature enters with two +1/+1 counters on it.
Vanguard Species — Whenever this creature attacks, you may remove a +1/+1 counter from it. If you do, search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

CMC
3
Mana cost
{2}{G}
Color identity
G
Rarity
uncommon
Set
Warhammer 40,000 Commander
Price
EDHREC rank
#10861
Buy on TCGplayer
Purestrain Genestealer card art
Purestrain Genestealer hits the table as an unblockable threat that proliferates on damage, snowballing counters every combat step. The Swarmlord unlocks its full ceiling, but even outside that shell the rate is real for any deck that cares about +1/+1 counters or keyword-soup creatures.

Best Commanders

Commanders with the highest synergy

01
The Swarmlord

The Swarmlord

71.0% of decks · synergy 0.69

The Swarmlord's triggered proliferate on Tyranid damage makes Purestrain Genestealer a recursive engine — unblockable damage triggers The Swarmlord, which spreads counters across the board, which makes every subsequent hit larger.

02
Magus Lucea Kane

Magus Lucea Kane

23.6% of decks · synergy 0.22

Magus Lucea Kane's copy ability doubles Purestrain Genestealer's X-cost abilities, and the free copy means two unblockable bodies threatening proliferate triggers simultaneously.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

Commander is where Purestrain Genestealer actually lives — the 71% inclusion rate in The Swarmlord decks confirms it's a core piece of that archetype, not a fringe inclusion. Legacy and Vintage technically permit it, but unblockable creatures without immediate haymaker impact don't compete at those power levels. Oathbreaker is a viable home if your planeswalker cares about counters or combat damage triggers. Everywhere else it's simply not legal.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Current price data for Purestrain Genestealer isn't available in this context, so check Scryfall or TCGPlayer for a live number. Given its 70%+ inclusion rate in The Swarmlord decks and niche appeal outside Tyranid lists, it likely prices as a narrow-synergy uncommon or low-value rare — worth picking up if you're building the archetype, not otherwise.

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