Rule evolution
Rule 401.5
Previously numbered 401.6.
Earliest archived Rules release: 2009-10-01 · 3 wording revisions · 1 renumbering
Earliest archived Rules release401.6Details
Some effects tell a player to play with the top card of his or her library revealed, or say that a player may look at the top card of his or her library. If the top card of the player's library changes while a spell is being cast, the new top card won't be revealed and can't be looked at until the spell becomes cast (see rule 601.2h). The same is true with relation to an ability being activated.
Wording changed401.6Details
Some effects tell a player to play with the top card of his or her library revealed, or say that a player may look at the top card of his or her library. If the top card of the player's library changes while a spell is being cast, the new top card won't be revealed and can't be looked at until the spell becomes cast (see rule 601.
2h2i). The same is true with relation to an ability being activated.Renumbered
401.6→ 401.5DetailsPreviously
4. Zones
401. LibraryThen
4. Zones
401. LibrarySome effects tell a player to play with the top card of his or her library revealed, or say that a player may look at the top card of his or her library. If the top card of the player’s library changes while a spell is being cast, the new top card won’t be revealed and can’t be looked at until the spell becomes cast (see rule 601.2i). The same is true with relation to an ability being activated.
Wording changed401.5Details
Some effects tell a player to play with the top card of
histheiror herlibrary revealed, or say that a player may look at the top card ofhistheiror herlibrary. If the top card of the player's library changes while a spell is being cast, the new top card won't be revealed and can't be looked at until the spell becomes cast (see rule 601.2i). The same is true with relation to an ability being activated.Wording changed401.5Details
Some effects tell a player to play with the top card of their library revealed, or say that a player may look at the top card of their library. If the top card of the player's library changes while a spell is being cast, the new top card won't be revealed and can't be looked at until the spell becomes cast (see rule 601.2i). The same is true with relation to an ability being activated. If the top card of the player's library changes while a player is taking a special action (see rule 116, "Special Actions"), the new card won't be revealed and can't be looked at until the player has finished taking that special action.