Voidslime

Instant

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

CMC
3
Mana cost
{G}{U}{U}
Color identity
GU
Rarity
rare
Set
Ravnica Remastered
Price
EDHREC rank
#4344
Buy on TCGplayer
Voidslime card art
Voidslime does something no other counterspell does at its mana cost — it stops triggered and activated abilities outright, not just spells, which means it answers the Craterhoof trigger, the Thassa's Oracle win condition, and the Aetherflux Reservoir activation that Counterspell can't touch. The cost is real: triple Simic pips on three mana locks it firmly into decks with heavy green-blue fixing, and The Mimeoplasm is the poster child for that price being worth it.

Best Commanders

Commanders with the highest synergy

01
The Mimeoplasm

The Mimeoplasm

24.9% of decks · synergy 0.23

The Mimeoplasm runs a reactive, graveyard-fueled game plan where one unanswered trigger — an enter-the-battlefield ability, a combo activation — ends the game, and Voidslime is the catch-all that covers every vector of that threat. At nearly 25% inclusion across Mimeoplasm lists, it's close to a staple.

02
Bonny Pall, Clearcutter

Bonny Pall, Clearcutter

17.1% of decks · synergy 0.12

Bonny Pall, Clearcutter invests heavily in big creatures and tree-token payoffs, and Voidslime protects that investment from both removal and the activated abilities opponents use to dismantle board states before they close out a game.

03
Mimeoplasm, Revered One

Mimeoplasm, Revered One

11.1% of decks · synergy 0.09

Mimeoplasm, Revered One plays a similar protect-the-threat game as its predecessor, and Voidslime earns its slot by shutting down the activated abilities — sacrifice outlets, blink effects, untap engines — that opponents lean on to disrupt an evolving board.

Format Analysis

Where it lives, where it can’t

FormatVerdict
commander
legacy
modern
pioneer
standard
vintage
pauper
oathbreaker

Commander is the format that makes Voidslime genuinely exceptional — the game is riddled with triggered abilities and activated abilities that win on the spot, and Counterspell simply doesn't reach them. In Legacy and Vintage, the format speed and the dominance of Force of Will mean three-mana reactive spells rarely make the cut outside of dedicated control shells, and even then the pip requirement is steep. Modern is legal but similarly hostile to three-mana counters in most competitive builds. Voidslime is at its ceiling in Commander, where the format's stack complexity and the frequency of Thassa's Oracle, Aetherflux Reservoir, and combo trigger chains make the extra coverage worth every pip.

Key Combos

Combo lines featuring this card

Price Context

Current price

unknown tier

Pricing data for Voidslime isn't resolved in the current dataset, so check Scryfall or your preferred retailer for the live number. Historically it has carried a modest premium for a niche counterspell — worth picking up if you're building or upgrading a Simic shell that runs into combo triggers regularly.

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