Glamerdye

Casting a card by using its retrace ability works just like casting any other spell, with two exceptions: You're casting it from your graveyard rather than your hand, and you must discard a land card in addition to any other costs.

You choose the two color words when Glamerdye resolves. You can't change a word to the same word; you must choose a different word.

When a retrace card you cast from your graveyard resolves, fails to resolve, or is countered, it's put back into your graveyard. You may use the retrace ability to cast it again.

Glamerdye's effect has no duration. It will last until the game ends or the affected spell or permanent leaves the relevant zone, with the following exception: If Glamerdye affects an artifact, creature, enchantment, or planeswalker spell, it will also affect the permanent that spell becomes when it resolves.

If the active player casts a spell that has retrace, that player may cast that card again after it resolves, before another player can remove the card from the graveyard. The active player has priority after the spell resolves, so they can immediately cast a new spell. Since casting a card with retrace from the graveyard moves that card onto the stack, no one else would have the chance to affect it while it's still in the graveyard.

Glamerdye affects each instance of the chosen word in the text box of the spell or permanent, as long as it's being used as a color word. Glamerdye won't change such words in card names, such as White Knight. It also won't change mana symbols.