In general, "[a] card exiled face down has no characteristics" (C.R. 406.3a), including name and abilities (C.R. 109.3). However, hideaway grants an ability to that card when it's exiled that way (C.R. 702.75a; under C.R. 101.1, hideaway overrides C.R. 406.3a in part); in general, though, such an ability will be the only characteristic the card will have — and therefore, if the card exiled this way (as it would be if face up) is—
Misthollow Griffin or Eternal Scourge, it won't have the corresponding ability allowing the card to be cast from exile.
Hedron Alignment, it won't count as "a card named Hedron Alignment in exile" because it has no name.
EDIT (Jan. 30): Clarification.
EDIT (Feb. 17, 2020): See comment 3.
EDIT (Feb. 4, 2021): Edited to conform to rule update with Kaldheim.
EDIT (Feb. 11, 2021): One rule was renumbered in the meantime.
After rereading the rules, I was wrong in part. Even on December 1, 2017, when the Ixalan version of the rules were in effect, C.R. 406.3 read in part: "Unless [a face-down card in exile] is being cast face down ..., the card is turned face up just before the player announces that [they are] playing the card", and this is still the case as of Theros Beyond Death (see what is now C.R. 406.3a). Thus, if you own Misthollow Griffin or Eternal Scourge face down in exile, and at least if you're otherwise allowed to look at either card, you may still begin to cast that card face up. As part of doing so, you turn the card face up before announcing you will cast that card from exile. This conclusion is reinforced by C.R. 601.3e, a rule added in Throne of Eldraine.
EDIT (Feb. 4, 2021): Moreover, this didn't change with the release of Kaldheim, which added C.R. 406.3b, a rule that does not cover this situation since it applies only if a spell or ability "allow(s) a player to cast spells with certain qualities from among face–down cards in exile", which is not the case with hideaway.
EDIT (Feb. 11, 2022; Mar. 5, 2022): With the release of Kamigawa: Neon Dynasty, C.R. 406.3 now allows a player "instructed to look at a card and then exile it face down", as with hideaway (C.R. 702.75a), to "continue to look at that card as long as it remains exiled, even if the instruction allowing the player to do so no longer applies". Thus, if a player exiles Misthollow Griffin face down due to hideaway, that player may in any case cast that card face up due to C.R. 406.3a.
EDIT (May 3, 2022): With the release of Streets of New Capenna, the ability the card exiled with hideaway gains changed from "Any player who has controlled the permanent that exiled this card may look at this card in the exile zone" to "The player who controls the permanent..." (C.R. 702.75a). Thus, in general, a player is allowed to look at that card in exile only if—
that player currently controls the "permanent that exiled th[at] card", or
that player exiled that card due to hideaway (see C.R. 406.3).
After rereading the rules, I was wrong in part. Even on December 1, 2017, when the Ixalan version of the rules were in effect, C.R. 406.3 read in part: "Unless [a face-down card in exile] is being cast face down ..., the card is turned face up just before the player announces that [they are] playing the card", and this is still the case as of Theros Beyond Death. Thus, if you own Misthollow Griffin or Eternal Scourge face down in exile, and at least if you're otherwise allowed to look at either card, you may still begin to cast that card face up. As part of doing so, you turn the card face up before announcing you will cast that card from exile. This conclusion is reinforced by C.R. 601.3e, a rule added in Throne of Eldraine.
I'm not sure I agree.
406.3. Exiled cards are, by default, kept face up and may be examined by any player at any time. Cards
“exiled face down” can’t be examined by any player except when instructions allow it. However,
once a player is allowed to look at a card exiled face down, that player may continue to look at that
card as long as it remains exiled, even if the instruction allowing the player to do so no longer
applies. A card exiled face down has no characteristics, but the spell or ability that exiled it may
allow it to be played from exile. Unless that card is being cast face down (see rule 707.4), the card
is turned face up just before the player announces that they are playing the card (see rule 601.2).
That last sentence would appear to reference the second to last. That sentence is concerned with the hideaway ability and it's linked cast from exile ability.
A card exiled face down has no characteristics, but the spell or ability that exiled it may
allow it to be played from exile. Unless that card is being cast face down (see rule 707.4), the card
is turned face up just before the player announces that they are playing the card (see rule 601.2).
It is hard to see how the rule authorizes the announcement of casting due to an ability the face-down card would have if face-up but currently doesn't have.
That last sentence would appear to reference the second to last. That sentence is concerned with the hideaway ability and it's linked cast from exile ability.
A card exiled face down has no characteristics, but the spell or ability that exiled it may
allow it to be played from exile. Unless that card is being cast face down (see rule 707.4), the card
is turned face up just before the player announces that they are playing the card (see rule 601.2).
It is hard to see how the rule authorizes the announcement of casting due to an ability the face-down card would have if face-up but currently doesn't have.
With that interpretation, then the last sentence of C.R. 406.3a doesn't apply, strictly speaking, to Shelldock Isle's last ability or hideaway, since the former didn't exile the card it refers to and the latter doesn't allow a player to play any cards (C.R. 702.74a).
EDIT (Feb. 4, 2021): Edited to conform to rule update for Kaldheim.
True, I assumed "the spell or ability that exiled it" means "the spell or ability that exiled it (or an ability linked to that exiling ability)".
That seems logical, but I am open to being corrected.
Private Mod Note
():
Rollback Post to RevisionRollBack
To post a comment, please login or register a new account.
Also, if Shelldock Isle exiles Hedron Alignment, this does not count for victory condition?
Misthollow Griffin or Eternal Scourge, it won't have the corresponding ability allowing the card to be cast from exile.EDIT (Jan. 30): Clarification.
EDIT (Feb. 17, 2020): See comment 3.
EDIT (Feb. 4, 2021): Edited to conform to rule update with Kaldheim.
EDIT (Feb. 11, 2021): One rule was renumbered in the meantime.
EDIT (Feb. 4, 2021): Moreover, this didn't change with the release of Kaldheim, which added C.R. 406.3b, a rule that does not cover this situation since it applies only if a spell or ability "allow(s) a player to cast spells with certain qualities from among face–down cards in exile", which is not the case with hideaway.
EDIT (Feb. 11, 2022; Mar. 5, 2022): With the release of Kamigawa: Neon Dynasty, C.R. 406.3 now allows a player "instructed to look at a card and then exile it face down", as with hideaway (C.R. 702.75a), to "continue to look at that card as long as it remains exiled, even if the instruction allowing the player to do so no longer applies". Thus, if a player exiles Misthollow Griffin face down due to hideaway, that player may in any case cast that card face up due to C.R. 406.3a.
EDIT (May 3, 2022): With the release of Streets of New Capenna, the ability the card exiled with hideaway gains changed from "Any player who has controlled the permanent that exiled this card may look at this card in the exile zone" to "The player who controls the permanent..." (C.R. 702.75a). Thus, in general, a player is allowed to look at that card in exile only if—
I'm not sure I agree.
That last sentence would appear to reference the second to last. That sentence is concerned with the hideaway ability and it's linked cast from exile ability.
It is hard to see how the rule authorizes the announcement of casting due to an ability the face-down card would have if face-up but currently doesn't have.
EDIT (Feb. 4, 2021): Edited to conform to rule update for Kaldheim.
That seems logical, but I am open to being corrected.