Here are the planeswalkers cards one woudl get if they were lucky enough to be going to this year’s San Diego Comicon:

Source: http://magic.wizards.com/en/articles/archive/daily-magic-update/update-2017-07-10

Available at the Hasbro Toy Shop, the exclusive features:

“Magic: The Gathering 2017 Planeswalker Pack”  – $180.00

• Includes a 24” x 36” screen print of Nicol Bolas illustrated by Brandon Holt. Produced in collaboration with Mondo. Printed by D&L on Magic: The Gathering card stock. Nicol Bolas is an iconic Magic character who first made an appearance in the game in 1994 and has been a powerful fan favorite since.
• 6 Planeswalker cards with exclusive artwork by illustrator, Vincent Proce
• Characters include Gideon Jura™, Jace Beleren®, Liliana Vess®, Chandra Nalaar®, Nissa Revane™ & Nicol Bolas™