In the Magic: The Gathering universe, which plane does the Homelands expansion take place in?

The answer is Ulgrotha because the Homelands expansion in the Magic: The Gathering universe is set in Ulgrotha, a plane that had been cut off from the rest of the multiverse due to the magical actions of Baron Sengir. Ulgrotha is a land shrouded in dark and mysterious energy, inhabited by various creatures and beings, including vampires and werewolves, and it serves as the backdrop for the Homelands storyline.