Going forward, this symbol, often in mythic orange color, will be the thing that catches your eye, and the thing that signifies an official Magic branded product
While this would not be a problem if it instead serves the higher purpose of a game-ending combo, such as Sigardas Aid, I think Ephemerate does not quite do that
Not only do decks playing those cards in EDH get another copy (assuming they play blue), but it's only half the card
Colossal Grave-Reaver This eight-mana behemoth is one of the few gigantic spells that are worth their casting cost
The main set will consist of over 400 cards, and the four preconstructed Commander Decks will consist of 100 cards each
Activate this ability only during your upkeep