Wizards of the Coast has released a new Secret Lair drop, celebrating the Elder Dragonlords of Tarkir. The set features five reversible cards with a grown-up version of each dragonlord on one side and an adorable, juvenile portrait on the other. Each card is legal in standard formats but intended primarily for collecting. Available in standard or foil versions, pricing and availability have yet to be announced.
Source: https://www.polygon.com/tabletop-games/542555/mtg-magic-the-gathering-tarkir-dragonstorm-secret-lair