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Strionic Resonator
Price$7.27 – $19.83
Buy on TCGplayer

Strionic Resonator

{2}

Artifact

LegalRank #565

{2}, {T}: Copy target triggered ability you control. You may choose new targets for the copy. (A triggered ability uses the words "when," "whenever," or "at.")

Why is this card good?

Strionic Resonator is a build-around payoff that doubles your best triggered abilities — and triggers are everywhere in Commander. The catch is the steep cost: 4 total mana (2 to cast, 2+tap to activate) per copy, which makes it underwhelming as a generic include. You want it where a single trigger swings the game: copying an extra combat step from Aggravated Assault, doubling an attack trigger like Isshin/Aurelia, copying a Coalition Victory or "you win" trigger, or stacking ETB/dies triggers in aristocrats and blink decks. It shines in decks built around one repeatable, high-impact trigger — extra combats, big attack-trigger payoffs, or commander-cast triggers. With cost reducers or untappers (Voltaic Key, Thousand-Year Elixir), it becomes genuinely degenerate, even comboing for infinite combat steps alongside Aggravated Assault + a mana source. Don't play it as filler. If your deck doesn't have a specific trigger worth 4 mana to copy, it's just a do-nothing rock. Reserve it for decks where the upside is explosive, not incremental.

Related cards

Lithoform EngineC

Also copies triggered abilities (plus activated/spells) for value.

PanharmoniconC

Doubles ETB and other enter triggers, similar trigger-doubling role.

Roaming ThroneC

Doubles chosen-type creature triggers, another trigger multiplier.

Isochron ScepterC

Repeatable spell-copy engine artifact in similar value slot.

Rings of BrighthearthC

Copies activated abilities; pairs with similar combo-copy strategies.

Illusionist's BracersC

Copies activated abilities of equipped creature for repeatable value.

Elesh Norn, Mother of MachinesW

Doubles your ETB triggers while shutting off opponents'.

Naban, Dean of IterationU

Doubles wizard ETB triggers, another trigger-copy payoff.

Printings (7)

lccThe Lost Caverns of Ixalan Commander · #116R$19.83Buy
mocMarch of the Machine Commander · #384R$9.12Buy
brcThe Brothers' War Commander · #165R$8.17Buy
nccNew Capenna Commander · #381R$8.01Buy
c19Commander 2019 · #224R$7.45Buy
a25Masters 25 · #232R$8.68Buy
m14Magic 2014 · #224R$7.27Buy

Played by these commanders

Kamiz, Obscura Oculus100% of 1
Kadena, Slinking Sorcerer100% of 1
Mishra, Eminent One100% of 1
Bright-Palm, Soul Awakener100% of 1

Combos (8)

  • Brago, King Eternal + Strionic Resonator

    → Infinite blinking of nonland permanents, Infinite ETB, Infinite LTB

  • Unstoppable Plan + Strionic Resonator

    → Infinite mana nonland permanents you control can produce, Infinite untap of nonland permanents you control

  • Mishra, Eminent One + Gonti's Aether Heart + Strionic Resonator

    → Infinite turns, Lock

  • Ulalek, Fused Atrocity + Strionic Resonator + Kozilek's Unsealing

    → Infinite copies of abilities you control on the stack, Infinite copies of a specific creature, Infinite creature tokens

  • Ulalek, Fused Atrocity + Writhing Chrysalis + Strionic Resonator

    → Infinite +1/+1 counters on an infinite number of creature tokens, Infinite copies of abilities you control on the stack, Infinite creature tokens

  • Etrata, the Silencer + Strionic Resonator + Lithoform Engine

    → Target opponent loses the game

Rulings (8)

  • 2018-03-16

    Triggered abilities use the word "when," "whenever," or "at." They're often written as "[Trigger condition], [effect]."

  • 2018-03-16

    Strionic Resonator targets a triggered ability that has triggered and is on the stack and creates another instance of that ability on the stack. It doesn't cause any object to gain an ability.

  • 2018-03-16

    The source of the copy is the same as the source of the original ability.

  • 2018-03-16

    If the triggered ability is modal (that is, if it says, "Choose one —" or similar), the mode is copied and can't be changed.

  • 2018-03-16

    If the triggered ability divides damage or distributes counters among a number of targets (for example, the ability of Bogardan Hellkite), the division and number of targets can't be changed. If you choose new targets, you must choose the same number of targets.

  • 2018-03-16

    Any choices made when the triggered ability resolves won't have been made yet when it's copied. Any such choices will be made separately when the copy resolves. If the triggered ability asks you to pay a cost (such as that of Frenzied Goblin), you pay that cost for the copy.

  • 2018-03-16

    If a triggered ability is linked to a second ability, copies of that triggered ability are also linked to that second ability. If the second ability refers to "the exiled card," it refers to all cards exiled by the triggered ability and the copy. For example, if Fiend Hunter's enters-the-battlefield ability is copied and two creatures are exiled, they both return when Fiend Hunter leaves the battlefield.

  • 2018-03-16

    In some cases involving linked abilities, an ability requires information about "the exiled card." When this happens, the ability gets multiple answers. If these answers are being used to determine the value of a variable, the sum is used. For example, if Elite Arcanist's enters-the-battlefield ability is copied, two cards are exiled. The value of X in the activation cost of Elite Arcanist's other ability is the sum of the two cards' mana values. As the ability resolves, you create copies of both cards and can cast none, one, or both of the copies in any order.

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