Happened to me, I just spent several wild cards on a new standard deck that utilizes this card, so that's very disappointing. Come on Wizards, fix your stuff, you're actively trying to kill paper and don't care about modo, at least code your greedy cash grab platform so it works correctly.

I have a screenshot but I just waited 30 minutes for this comment to post with the screenshot and it won't so the hits just keep coming.

This bug has occurred for me the last 4 days and has lost me several matches in both draft and standard. I have a Mac that I play on so it doesn't seem to be the difference in PC type. I can cast the ability part of the spell without issue, it's just when using the physical 8 mana cost Magma Opus spell itself. Please fix and compensate players accordingly.

Just had this bug hang a game, as well. As you can see in the screenshot, one of the creatures (the leftmost Realmwalker) has been selected as a target for both damage and to tap. The game has hung like it has for other people. I had unquestionably won this game regardless of using this card, and doing so caused the hang. Please fix and compensate. This was on Windows.

Reproduced, it appears that targeting a permanent that becomes tapped before the spell resolves can cause the program to freeze. This interact cost me two games in draft today. Please fix the card, and I'd like a draft token.

logs of both games are attached.

Happened to me just now.

Same here on Windows 10 PC. Looks like opponent conceded in response. Tried resetting and got a blank battlefield.

When targeting multiple creatures or tokens with the same name Magma Opus does not allow you to choose the amount of damage dealt to each target. It also does not separate targets once they are targeted so it is extremely difficult to select the 3rd or 4th token of the same name when trying to tap creatures.
https://youtu.be/iWytscQ_DXU (wouldn't let me send video. This links to an unlisted video showing the UI bug)

I was able to change the amount of damage sent to the first target but the option to choose damage for the 2nd target was not available. I was already on a timer here because I had spent so much time trying to target the 3rd creature to tap it.

Magma Opus - Crash after distributing damage

Steps to reproduce the bug:
1. Cast Magma Opus
2. Assign the damage. I targeted 2 (1/1) tokens and the opponent.
3. I selected the wall and a token to be tapped
4. Clock/rope starts and continues until it reaches cero and the game does not progress. Spell does not resolve
5. Recorded the Game Log (see attachment) before I restarted the game.

Platform: PC

Expected result: Spell to resolve and game to continue.
Actual Results: Spell does not Resolve and game does not continue.

Magma Opus card broke my game (for the second time now) causing me to lose a game of strixhaven premium draft. After the card is played, sometimes the game becomes completely unresponsive. I restarted the game but found out I had lost the match because of this.
Please refund me if possible. I spent 10.000 gold on this draft.

Magma opus - same issue as many people are having, possibly because I tapped an already tapped permanent?

Resulted in a third loss in draft.

(During a scealed game in MtgA) I was unable to cast Magma Opus : here is what happened step by step (it happened twice)

I used the spell;
I chose 2 target to distribute the dmgs on;
I chose 2 targets to tap (one of them was targeted by the dmgs too);
The game asks for the damage repartition : I split it 3/1 and then press "confirm";
Then the game asks for damage repartition again and not there is no more numbers of dmgs over the targets and no UI where the "Cancel/Confirm" should be : the timer goes down and I had to alt+f4 to come back to the game.
I tried it again after coming back and I had the exact same issue. (this time the targets were differents since it had skipped my turn)
Made me loose my last scealed game :C

:(

Same issue here. I also tried to tap and then target an already tapped creature similar to fafa.

freezed and I can do anything too

The Premier draft could not try to wrew the damage at two points on two points to the same name creature.
I play on my iPhone

Steps:
1. Cast Magma Opus
2. Assign targets for damage
3. Assign targets for tap
4. Assign damage to targets

Expected:
Pay mana for spell

Observed:
Hung state. Timer burned down to near zero but never expired
Message to Distribute Damage remained on screen.
Unable to interact or advance the game.

Took Screen shot A after about 5 minutes of no interactivity (I thought my opponent was tanking with priority). Left and came back 20 minutes later and too Screen shot B.

I would like compensation for this.

same thing happened for me

After distributing damage, it will not return to gameplaay

Same thing happened here. Froze game, caused a timeout, game loss, and then match loss to time because I couldn't progress the game state. Wasted my gems on a Traditional Draft for this.

Casting Magma Opus glitched the game, caused a timeout, and then made me concede the match to time.