Rich Douek & Jed MacKay 
Magic #21 [PDF ebook] 

While our planeswalker heroes enjoy a time of relative peace and happiness that they (and readers!) have thirsted for, threats from their past refuse to rest… With a villain ready to pull at the seams of the multiverse, will the wildcard planeswalker entering the story help Jace, Vraska, Ral, Kaya, Niko, Chandra, Garruk, and Liliana, or is chaos in store? Get ready for an all new era of MAGIC, and a story that will change the fate of the Multiverse itself!