Magic The Gathering: Arena

Magic The Gathering: Arena Dev Tracker




27 Apr

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In your screenshot, the Lavabrink Venturer has a "badge" with 3 crystals on it. That badge means it that "odd" was chosen for its protection ability, otherwise it would be two crystals. Thanks for the report though! #wotc_staff


26 Apr

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It’s a bug; we’ll get it fixed soon.

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Originally posted by GreatOneFreak

Hey Ben, there’s also another higher profile bug were mutating creatures on top of nissa lands do not keep their stats.

That is rules-correct. The power/toughness setting effect Nissa confers happens on a later layer than the modifications Mutate does. #wotc_staff

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Originally posted by BladerJoe-

So does this affect other abilities as well now that ability counters are in the game? Flying comes to mind.

I believe Menace is the only one of the "Ikoria nine" keywords to be backed by a qualification. Admittedly Flying probably should be for consistency's sake, but it isn't. #wotc_staff

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Originally posted by JMooooooooo

Natual Menace is always first, issue is/was with second and later not properly adding it's effect. So since non-conditional non-counter instance of Menace (or any other ability) cannot be removed from creature without also removing all other instances, it's not possible to reproduce this bug on creature with natural full-time Menace.

Precisely! #wotc_staff


25 Apr

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Thanks, I have a fix for this. As /u/50_Shades_of_Graves alludes to here, the word "creature" is the culprit - once the Scorpion dies it's not a "creature" any more but a "creature card". Still, the damage from it is dealt by a creature - the last-known-information of the Scorpion. I adjusted our code for "prevent" to allow for checking last-known-information objects. #wotc_staff

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Originally posted by Beneficial_Bowl

WotC coding

creature.menaceCounter--;
if (creature.menaceCounter == 0)
    creature.menace = false;

Check out my postmortem of the bug here to see what actually happened! #wotc_staff

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Originally posted by mooseman3

This bug is easily reproducible:

  • Play a nonhuman creature and give it a menace counter (in this case [[Fertilid]] and [[Blood Curdle]])
  • Mutate [[Cavern Whisperer]] onto it, so it gains the menace ability a second time.
  • Cast [[Heartless Act]] and remove the menace counter. The creature will now be able to blocked by a single creature.

Note that I've only tested this when the opponent casts Heartless Act during the attackers step, just in case that's the only time this happens. It's also somewhat likely that this logic applies to other keywords as well. I did check with the MTG Judge Chat and they agreed this is a bug, not a rule I'm misunderstanding.

edit: This bug was formally reported here if you want to vote it up to hopefully get this fixed soon.

To clarify, you have to Mutate a menace creature on top? Having menace naturally doesn't seem to result in this bug, I'll try again with mutating. #wotc_staff

EDIT: Yes, mutating seems to do the trick. Let's figure out what's going wrong.

EDIT 2: Alright, got it! Here's what's going on. Whenever we detect that you've gained a new ability, we usually kick off that new ability's continuous effects. However, multiple different places in the code can attempt to start those continuous effects (creating attachment relationships and redestining zone transfers are some somewhat esoteric examples), and we don't want to double-dip starting those continuous effects, so we see if there are any already from this ability.

Menace makes a BlockedByMinCountQualification, which is a continuous effect. When you add menace (say, Menace2, the one from Cavern Whisperer) to something that already has it (say, Menace1, from the Menace counter) we were erroneously thinking we'd be d...

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24 Apr

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The rule for predicting cost adjustments accidentally removed all checks for zone constraints (instead of just the ones about "this spell" - it's not a spell until it's on the stack!). So basically Mystical Dispute is predicting it cost 2 less if there was a blue card anywhere in the game. Oops! I have a fix, but it probably won't be live for a while, especially as it doesn't affect gameplay much (just gives you stops if you can afford U and your opponent controls a spell...) #wotc_staff

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Originally posted by mokomi

For "A mutated Cavalier of Thorns should no longer be able to target "itself" if you chose to exile it when it dies."

Wait, I thought that each card has that ability. E.G. A Cavalier of thorns mutated with a greathorn. Shouldn't both the Greathorn and the Cavalier choose to exile cards? Can the Greathorn choose the Thorns?

Or am I thinking wrong as in the bug the Greathorn can choose the Greathorn.

According to my chat with MTG rules manager Eli Shiffrin, "another" on Cavalier of Thorns means "other than any card that constituted this permanent". I suppose a Melded creature that became a copy of Cavalier of Thorns would have had the same issue - y'know, if Eldritch Moon were in Arena. #wotc_staff


23 Apr

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Awesome find. Awesome bug. No plan to fix; it’s just more fun this way.

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We have a fix for this issue coming in the next update. Here's what you can do in the meantime.

  1. Add another Zirda to your deck (you don't need to craft it)
  2. Put that Zirda in your companion slot
  3. Save the deck
  4. Reopen it and take out the extra Zirda from your sideboard

Hopefully, that helps!

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Thanks for letting me know, everyone! Restart the client and you should be able to get back in. :slight_smile:


(Note: It may take a few minutes but should be fixed. Grab a snack or something, then come back and try again.)

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@Johehan#75353:

Same here, system is down for maintenance.

What region are you in? Any details that you can give me would be great, so we can look into this a bit farther!

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@TheBlackSquirrel#66193:

This forum makes it seem like the patch is done, and the game should be up and running. So, how long before we can actually play again? I'm getting tired of loading it up and getting the SYSTEM IS DOWN message.

The game should definitely be operational. Could you walk me through what is exactly happening to you?