mtg cards with x in the casting cost Mana Cost: humanReadable.~[x], 11 cards

1 Lord of Change

By combining sacrifice outlets with powerful drain effects like Diregraf Captain and Bastion of Remembrance, you will turn your own creatures' deaths into your opponents' ultimate downfall

Im going to narrow it down today however and talk about the spoilers that started there for the set Foundations Jump Start

With everything you need contained in the box, you can jump right into your first quest, no experience required.

Your win conditions include Brainstorm, Tendrils of Agony, Gutshot, Guttersnipe, as well as storm spells that can generate a ton of creature tokens such as Talrand or Empty the Warrens