Planechases return was tucked amidst a long blog post by publisher Wizards of the Coast that detailed the apparent glut of plans for upcoming set March of the Machines
There's some disconnect between how these cards have been pitched and their execution, which seems much more focused on providing a skeleton of moments that might help players to orient themselves in the narrative and entice players to check out the actual story
Every deck can benefit from spells that get rid of opponents creatures, find key pieces of your deck, or draw cards
Several cards featured in Ursulas Return - including Ursula, Erics Bride and Diablo, Devoted Herald - feature the Shift keyword but allow players to avoid paying ink altogether, in exchange for players having to discard a certain type of card/s to pay to shift them in instead
Lastly, if youre running cards like From the Ashes and Demolition Field that allow your opponents to search for lands to replace what theyve lost, you can mess those up with a variety of effects like Opposition Agent and Aven Mindcensor that prevent them from searching for cards to remove the balancing aspect of those effects
Conveniently, this story is Missys Saga