The Master of Keys is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Flying When The Master of Keys enters, put X +1/+1 counters on it and mill twice X cards. Each enchantment card in your graveyard has escape. The escape cost is equal to the card's mana cost plus exile three other cards from your graveyard. (You may cast cards from your graveyard for their escape cost.)
How it works : The Master of Keys
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If a card has multiple abilities giving you permission to cast it, such as two escape abilities or an escape ability and a flashback ability, you choose which one to apply. The others have no effect.
No other card is named in this ruling.
- #2· Wizards of the Coast
If you cast a spell with its escape permission, you can't choose to apply any other alternative costs or to cast it without paying its mana cost. If it has any additional costs, you must pay those.
No other card is named in this ruling.
- #3· Wizards of the Coast
If a card with escape is put into your graveyard during your turn, you'll be able to cast it right away if it's legal to do so, before an opponent can take any actions.
No other card is named in this ruling.
- #4· Wizards of the Coast
Once you begin casting a spell with escape, it immediately moves to the stack. Players can't take any other actions until you're done casting the spell.
No other card is named in this ruling.
- #5· Wizards of the Coast
If The Master of Keys is no longer on the battlefield when its second ability resolves, you'll still mill twice X cards.
No other card is named in this ruling.
- #6· Wizards of the Coast
If a card has no mana cost, its escape cost is an unpayable cost, so you can't cast it for that cost.
No other card is named in this ruling.
- #7· Wizards of the Coast
If you're casting a Room with escape, you choose which half to cast, then pay the appropriate cost plus exiling three cards. The same is true for split cards, adventurer cards, and prototype cards.
No other card is named in this ruling.
- #8· Wizards of the Coast
If a spell you're casting with escape has an additional cost of discarding cards or sacrificing permanents, you may exile cards discarded or sacrificed this way to pay that part of its escape cost.
No other card is named in this ruling.
- #9· Wizards of the Coast
Escape's permission doesn't change when you may cast the spell from your graveyard.
No other card is named in this ruling.
- #10· Wizards of the Coast
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as an escape cost), add any cost increases, then apply any cost reductions. The mana value of the spell remains unchanged, no matter what the total cost to cast it was and no matter whether an alternative cost was paid.
No other card is named in this ruling.
- #11· Wizards of the Coast
After an escaped spell resolves, it returns to its owner's graveyard if it's not a permanent spell. If it is a permanent spell, it enters and will return to its owner's graveyard if it dies later. It can escape again.
No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
The Master of Keys + Scholar of the Ages + Burnt Offering + Corpse Churn
- 1Cast Burnt Offering by paying
and sacrificing Scholar of the Ages, adding seven
.
- 2Cast Corpse Churn by paying
, causing you to mill three cards.
- 3Cast Dance of the Dead from your graveyard for its escape cost by paying
and exiling three cards not used in the combo, returning Scholar of the Ages from your graveyard to the battlefield and attaching Dance of the Dead to it.
- 4Repeat.
The Master of Keys + Scholar of the Ages + Burnt Offering + Corpse Churn
- 1Cast Burnt Offering by paying
and sacrificing Scholar of the Ages, adding seven
.
- 2Cast Corpse Churn by paying
, causing you to mill three cards.
- 3Cast Animate Dead from your graveyard for its escape cost by paying
and exiling three cards not used in the combo, returning Scholar of the Ages from your graveyard to the battlefield and attaching Animate Dead to it.
- 4Repeat.
The Master of Keys + Scholar of the Ages + Burnt Offering + Corpse Churn
- 1Cast Burnt Offering by paying
and sacrificing Scholar of the Ages, adding seven
.
- 2Cast Corpse Churn by paying
, causing you to mill three cards.
- 3Cast Necromancy from your graveyard for its escape cost by paying
and exiling three cards not used in the combo, returning Scholar of the Ages from your graveyard to the battlefield and attaching Necromancy to it.
- 4Repeat.
Legal formats
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