Bug Report: Incorrect Counter Generation with "The Book of Exalted Deeds" and "Vorinclex, Monstrous Raider"
Description:
During a game on MTG Arena, I encountered an issue with the interaction between "The Book of Exalted Deeds" and "Vorinclex, Monstrous Raider."
Steps to Reproduce:
Ensure you have "Vorinclex, Monstrous Raider" on the battlefield.
Have your opponent activate the ability of "The Book of Exalted Deeds."
Card Texts:
Vorinclex, Monstrous Raider ({4}{G}{G})
Legendary Creature — Phyrexian Praetor
Trample, haste
If you would put one or more counters on a permanent or player, put twice that many of each of those kinds of counters on that permanent or player instead.
If an opponent would put one or more counters on a permanent or player, they put half that many of each of those kinds of counters on that permanent or player instead, rounded down.
6/6
The Book of Exalted Deeds ({W}{W}{W})
Legendary Artifact
At the beginning of your end step, if you gained 3 or more life this turn, create a 3/3 white Angel creature token with flying.
{W}{W}{W}, {T}, Exile The Book of Exalted Deeds: Put an enlightened counter on target Angel. It gains “You can’t lose the game and your opponents can’t win the game.” Activate only as a sorcery.
Expected Result:
According to the rules, "Vorinclex, Monstrous Raider" should cause the opponent to generate half a counter (rounded down) when using "The Book of Exalted Deeds." This means the opponent should not be able to put an enlightened counter on "The Book of Exalted Deeds."
Actual Result:
Despite having "Vorinclex, Monstrous Raider" on the battlefield, the opponent was able to add a counter to "The Book of Exalted Deeds," which allowed them to win the game. This suggests a bug in the implementation of counter generation.
Impact:
This bug led to an incorrect game outcome by allowing the opponent to add a counter they should not have been able to add, resulting in an unfair advantage.
Additional Information:
The version of MTG Arena being used.
Any other relevant details about the game state or card interactions.
Thank you for investigating this issue!
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Rezzahan#77802 commented
While putting an enlightenment counter on the target Angel (the Book doesn't get counters) should not happen with Vorinclex on the other side, it is irrelevant to this particular scenario. Placing the counter or not, the angel will make its controller unable to lose the game. Because that effect is not relying on the counter being placed, it is merely a reminder, it has no inherrent game function. The effect doesn't need the counter to be active.