Fraying SanityHow it works & interactions with other cards

How the Curse Tracks Progress

Fraying Sanity triggers at the beginning of each end step, targeting the player it is attached to. When the ability resolves, it checks the total number of cards put into that player's graveyard from anywhere since the turn began. This includes cards milled, discarded, destroyed permanents, and even spent instant or sorcery spells. Crucially, the ability counts these cards even if Fraying Sanity wasn't on the battlefield when they were put into the graveyard, and it still counts them even if they have since been exiled or moved to another zone.

The Resolution Process

The value of X is calculated only at the moment the triggered ability resolves. If multiple effects happen during the end step, or if you have multiple copies of Fraying Sanity attached to the same player, the math becomes explosive. The first trigger will mill a number of cards equal to what fell earlier in the turn; the second trigger will then count those newly milled cards as well, effectively doubling the total count for that turn.

Common Pitfalls

A common mistake is forgetting that Fraying Sanity triggers on *each* end step, not just yours. If an enchanted player discards down to their maximum hand size during their own cleanup step, Fraying Sanity has already triggered and resolved during the end step, so those discarded cards won't be counted until the next turn's end step. Additionally, remember that 'X' is a snapshot taken during resolution; if a player's graveyard is shuffled back into their library before the trigger resolves, the count of cards that *entered* the graveyard remains the same.

When to Deploy

You should play Fraying Sanity when you have established a board state that forces cards into the graveyard or when you can protect your enchantments. It is most effective when paired with 'taxing' effects that force opponents to make difficult choices about their resources, as every card they lose brings them closer to an empty library.

Interaction examples

Taxing the Mind

Rhystic Study

With Rhystic Study on the board, your opponent must choose to pay {1} or let you draw a card whenever they cast a spell. If they are low on mana and forced to discard the cards you drew (or if they cast spells that later go to the graveyard), Fraying Sanity will count every single one of those cards during the end step. Even a simple exchange where they cast a spell and it resolves adds 1 to the Fraying Sanity count.

Defense Leading to Decay

Propaganda

Propaganda creates a scenario where an opponent might have to spend all their mana just to attack, often preventing them from playing spells to interact with your board. If your opponent chooses not to attack and instead casts a few spells that end up in the graveyard, or if they are forced to discard due to a full hand, Fraying Sanity punishes that passivity by milling them for the total number of cards lost that turn.

Solo Mill Interaction

Suppose you cast a spell earlier in the turn that put 5 cards from the enchanted player's library into their graveyard. At the beginning of the end step, Fraying Sanity triggers. When it resolves, it sees those 5 cards. The player then mills an additional 5 cards. If you had a second copy of Fraying Sanity on them, the second trigger would see 10 cards (the original 5 plus the 5 from the first trigger) and mill another 10, for a total of 20 cards milled that turn.