Overlay card
An overlay card is a card that may be used on face-down cards to remind players of their power and toughness. Face-down cards are generally colorless 2/2 creatures with a creature type.
Morph
Khans of Tarkir introduced the overlay card for morphed cards. It was available in booster packs an extra card with an advertisement on the back side.[1][2] It was later reprinted in Dragons of Tarkir and Commander 2019.
An alternate art for the morph overlay came with Masters 25.[3]
Manifest
Fate Reforged added the overlay card for manifested cards.[4] It was later reprinted in Commander 2018 and Commander 2019.
Cyberman
The Universes Beyond set Doctor Who added the Cyberman overlay card, to indicate that a creature returned from the graveyard is now a colorless 2/2 Cyberman artifact creature.
A Mysterious Creature
Two mechanics in Murders at Karlov Manor—Cloak and Disguise—share an overlay card, to indicate that a face-down creature is a colorless, subtype-less 2/2 creature with ward 
.[5]
Gallery
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Khans of Tarkir morph overlay card.
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Fate Reforged manifest overlay card.
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Masters 25 morph overlay card.
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Doctor Who Cyberman overlay card.
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Murders at Karlov Manor A Mysterious Creature overlay card.
References
- ↑ Matt Tabak (August 31, 2014). "Mechanics of Khans of Tarkir". magicthegathering.com. Wizards of the Coast.
- ↑ Blake Rasmussen (September 10, 2014). "Tokens of Tarkir". magicthegathering.com. Wizards of the Coast.
- ↑ Wizards of the Coast (March 2, 2018). "The Tokens of Masters 25". magicthegathering.com. Wizards of the Coast.
- ↑ Matt Tabak (December 29, 2014). "Mechanics of Fate Reforged". magicthegathering.com. Wizards of the Coast.
- ↑ Matt Tabak (January 16, 2024). "Murders at Karlov Manor Mechanics". magicthegathering.com. Wizards of the Coast.