Act of Treason


Format Legality
Modern Legal
Legacy Legal
Vintage Legal
Commander / EDH Legal
Duel Commander Legal
Tiny Leaders Legal
Standard Legal
Pauper Legal

Printings View all

Set Rarity
Magic Origins Common
Khans of Tarkir Common
Duel Decks: Speed vs. Cunning Common
Magic 2014 Common
Gatecrash Common
2012 Core Set Common
2011 Core Set Common
Duels of the Planeswalkers Common
2010 Core Set Uncommon

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Act of Treason


Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. (It can attack and mana symbol t this turn.)

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Cardhoarder (MTGO)

0.01 TIX $0.01 Foil


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Act of Treason Discussion

primtj17 on B/R Burn Burn and Life Gain !@!

6 hours ago

First, Orbs of Warding is a great card that stops tutelage and emrakul. Good one-of in the sideboard. Maybe a Kalitas, Traitor of Ghet or two for some extra lifegain if necessary. One or two Act of Treasons also for emrakul and other big bads who are threatening to kill you. You already have smash to smithereens and nahiri's wrath, both good cards. Languish for those token and rush decks. An Ob Nixilis Reignited for extra removal and draw. Thats about all I can think of for now but thats a good start for a good sideboard.

OminousRex on Mono-Red Dragons (Won EMN GameDay)

2 days ago

Wow Rabid_Wombat, gratz on the win against a modern deck. People are typically taken aback when they first play against this deck. They are not exactly sure what direction this deck is coming from. What appear to be only minor annoyances quickly become a lethal threat. One of my favorite plays is casting Hanweir Garrison with Impact Tremors out then giving it haste with Hanweir Battlements and swinging for total of 7 just from them! And if they don't immediately deal with it, next turn it melds :)

shawnluc, this deck also has great SB tech. With practice it is incredibly consistent against top tier decks. One of my favorite SB plays is grabbing a big threat they have on the board with Act of Treason, swinging for a big hit, then sac'ing it with Fiery Conclusion to kill another one of their creatures :).

abby315 on Here have it.

2 days ago

I understand about Vessel of Volatility and the ramp option, but since this isn't a creature aggro deck--that is, your opponent's board state doesn't matter that much and you're not trying to stay ahead of them on board, just trying to get their life down to 0--playing a card that ramps you just a little bit but is otherwise a dead card in hand is really not the gameplan you're looking for.

If you keep testing, for instance, I think you'll find that a good 60% of the time Vessel doesn't help you get out your hand faster, since it isn't technically mana ramp (you pay two separate instances of 2 mana for 4 mana), and the other 40% of the time it'll help you get Castigator out a turn earlier but that won't affect the game drastically.

What will affect the game is having more burn spells!

You really want to slim down on cards that are supplementary--ones that require you to have other cards in hand to be useful. The ones in this list are Long Road Home, Vessel of Volatility, Harmless Offering, and to a degree Not Forgotten.

Now I simply think Not Forgotten is a bad card. Its recursion is mediocre, since it goes on top of the library, and a 1/1 spirit won't help you push a lot of damage through. Those should really come out for two more Collective Defiance.

Long Road Home, though, I like as sort of hexproof/returning back your Castigator tech. But I think you could take out 1 and go to something like 1 Fiery Impulse or, if you don't want Origins cards, Galvanic Bombardment.

Vessel of Volatility, for the reasons I explained above, should be taken out for Incendiary Flow, which is a great removal or burn spell that occupies the same mana slot, making your burn much more consistent.

I would take out one Harmless Offering for the 4th Incendiary Flow.

Then I really just think taking out one Tormenting Voice for one more Galvanic Bombardment/Fiery Impulse will smooth out your curve. Tormenting Voice is a good card, but at 2 mana and with the discard clause it's not something you generally want to see 3 times in a game, and it's not even something you want in your opening hand.

Again, I think Exquisite Firecraft in any amount will really help; if not, just keep in mind for rotation that adding more burn slots will make the deck run smoother, and see if there are any cards in Kaladesh that catch your eye.

Sideboard ideas:

Goblin Dark-Dwellers for some lategame power.

More Galvanic Bombardment/Fiery Impulse to get rid of weenies.

Lightning Axe/Roast for big dudes.

Rending Volley.

More copies of Weaver of Lightning.

Act of Treason.

More Declaration in Stone.


square711 on Mardu Threaten

3 days ago

Act of Aggression nonbos with the rest of your deck. Can't be cast from your graveyard when you play Goblin Dark-Dwellers and makes it tough to gain enough life to proc Ayli, Eternal Pilgrim's second ability.

Speaking of Ayli, she kinda sucks as a sacrifice outlet. You want creatures that let you sac other creatures for free, so you can tap out to Act of Treason as early as turn 3, for example. Viscera Seer and Cartel Aristocrat are what you need.

Lightning Helix is a good card, but you really should be playing Lightning Bolt instead. And running three Elspeths isn't a good idea, especially in a deck that has such a high curve in the first place.

As for the sideboard, it depends on your metagame, but there are always some cards you can never go wrong with (Fulminator Mage, Spellskite, Stony Silence and so on). And since your strategy is so dependant on the enemy playing good creatures, which won't always be the case, some SB'd Duress may help you deal with creatureless combo decks (don't bother playing Thoughtseize or Inquisition of Kozilek, as your deck wants the opponents to play their creatures).

BlueScope on Can you equipt an opponents ...

4 days ago

@acbooster (and the questioner): The creature won't be sacrificed, as you control the ability, and you can only sacrifice creatures you control. There is a specific ruling regarding this case:

If Stitcher's Graft's last triggered ability triggers, but you don't control the permanent it became unattached from at the time that ability resolves (perhaps because another player has somehow gained control of it), you won't be able to sacrifice it.

And to be a bit more precise regarding the way the headline of the question is phrased: You can only ever equip a creature you control. Taking control of a creature until end of turn is enough to be able to attach your own equipment to it, and it will remain on the creature if it changes controllers again, until re-equipped to another creature. I explained this is great detail here not too long ago.

Also, since you mentioned Malevolent Whispers (and not, say, Act of Treason, let me add that if you cast it during your opponent's turn, you won't be able to activate the equip ability, as you can only activate equip abilities at sorcery speed.

Bovine073 on Card creation challenge

6 days ago

Muzzio, Exiled Architect mana symbol 1mana symbol u

Legendary Creature - Human Artificer

When Muzzio enters the battlefield, you may sacrifice two artifacts. If you do, search your library for an artifact with CMC 3 or less and put it onto the battlefield.

At the beginning of your upkeep, if you control five or more artifacts, return an artifact at random from your graveyard to your hand.


Create a fairly costed, somewhat playable, Act of Treason-with-a-twist card such as Lose Calm or the new one from conspiracy.

ForAkros529 on Sacrifice

1 week ago

I love the combo of Act of Treason and sacrificing creatures. +1 from me!

OminousRex on Mono-Red Dragons (Won EMN GameDay)

1 week ago

For Planeswalkers, control and the pyromancer's goggles I brought in Scab-Clan Berserker. I also brought in Rending Volley & Naturalize against BW control to deal with Archangel Avacyn  Flip and Virulent Plague. I brought in Scab-Clan Berserker and Act of Treason against GR Ramp. I brought in Rending Volley against Bant Company to deal with Spell Queller but that was probably unnecessary because I absolutely crushed Bant CoCo with the other burn I already had. Thanks for the upvote! :)

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