A 2-mana mono-black Hero from Marvel Super Heroes with menace that mills an opponent into a free spell every time it connects — choose a counter, or cast their own card against them.
Aggressive black decks. A cheap, evasive threat that either grows on its own or occasionally hands you a free spell is strong value for two mana.
Tempo and disruption shells. Casting an opponent's own card against them, for free, is both card advantage and a real tempo swing in the same trigger.
Counters-matter decks. Choosing the +1/+1 counter mode consistently turns Black Widow into a growing threat that also benefits from other counter synergies.
How it does in Commander
As the commander
It's a fine budget commander for a black aggro or tempo deck, with repeated access to the combat trigger from the command zone rewarding a deck built to attack early and often — though it works just as well as a two-drop in the 99 of a larger black shell.
In the 99
A cheap, flexible aggressive body that fits naturally into almost any black deck willing to attack, doing real work whether the game wants a growing threat or a source of occasional free spells.
Formats it's strong in
Aggressive black decks. Two mana for an evasive threat that scales or generates value is a strong rate for the archetype.
Decks that value flexibility. The choice between a counter and a free spell lets the card adapt to whatever the game state calls for.
Formats it's weak in
Decks that can't protect it. Losing a small evasive creature to removal before it connects a few times leaves the card as a below-rate two-drop.
Slow, defensive decks. The value is locked behind combat damage, which is a poor fit for a deck not planning to attack.
Synergistic cards
Bident of Thassa — Rewards unblocked attackers with extra card draw, stacking with the value Black Widow is already generating on connection.
Any counters-matter payoff — Consistently choosing the +1/+1 counter mode turns Black Widow into a growing engine for whatever else cares about counters.
Whispersilk Cloak — Guarantees the creature connects every turn, maximizing how often the trigger fires.
Any evasion enabler — The card's entire value proposition depends on connecting in combat, so anything supporting that directly raises its ceiling.
Is it worth the price?
As a recent-set card, Black Widow, Super Spy is affordable and a low-risk pickup for any aggressive black deck — cheap enough to try without much financial commitment.