If Glimpse the Cosmos resolves during your turn and is put into your graveyard, you receive priority before any other player does. You can cast Glimpse the Cosmos again from your graveyard using the last ability before any player can attempt to remove it from your graveyard.
Glimpse the Cosmos has mana value 2, no matter what you actually paid to cast it.
If you cast Glimpse the Cosmos from your graveyard using a different permission, the last ability won't apply. You'll pay whatever cost that permission stipulates, and you'll follow that permission's instructions regarding exiling Glimpse the Cosmos, if any.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Lorenzo Mastroianni
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Casting Glimpse the Cosmos from your graveyard using the last ability doesn't change when you can cast it.
