Unrules question: If I have Yet Another Aether Vortex on the field, and I Griptide the creature on the top of my opponents library, what happens?

Basically nothing happens as it’s already on top of its owner’s library.

Time Ebb was blue at first, then you made Excommunicate in white, then said the ability was back in blue with Griptide and Totally Lost. Now we've had Unexpectedly Absent and Quarry Colossus. Is it white again? White and blue?

It’s supposed to be blue.

Why was Repel reprinted as Griptide? I thought one of the goals of assigning single-word names to classic, simple effects was to be reprinted. This doesn't seem to fall under the Evolving Wilds reasoning that some decks might want copies 5-8.

When we reprint a card, unless it’s 4-of-ness is important we let the creative team decide whether or not that name works in the new environment. If it does, it most often stays. If it doesn’t, it most often changes.