Mark of Dis • Dis • Action • Common • Play: Deal 2 to a creature. If it is not destroyed, its controller must choose that creature’s house as their active house on their next turn. • Artist: Fábio Perez • Card Number: MM:011, VM2023:098
If Mark of Dis is played on an opponent's creature that belongs to a house not on the opponent's identity card, there must be a card of that creature's house under the opponent's control during their Choose a House step for Mark of Dis to force the house choice.
Example: Chris is playing a deck with Brobnar, Mars, and Sanctum. Chris plays Hypnobeam to take control of a Saurian creature from Sam. On Sam's turn, Sam plays Mark of Dis and targets the Saurian creature, but doesn't destroy it, forcing Chris to choose Saurian for their active house next turn. Sam then subsequently plays a card that destroys the Saurian creature in Chris' battleline. On Chris' turn, when they reach the Choose a House step, they are forced to choose a house that they cannot choose as it is not on their identity card and they don't control a card of that house. Since Cannot effects take precedence, Chris may freely choose their active house.
to a creature. If it is not destroyed, its controller must choose that creature’s house as their active house on their next turn. • Artist: Fábio Perez • Card Number: 
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Example: Chris is playing a deck with Brobnar, Mars, and Sanctum. Chris plays Hypnobeam to take control of a Saurian creature from Sam. On Sam's turn, Sam plays Mark of Dis and targets the Saurian creature, but doesn't destroy it, forcing Chris to choose Saurian for their active house next turn. Sam then subsequently plays a card that destroys the Saurian creature in Chris' battleline. On Chris' turn, when they reach the Choose a House step, they are forced to choose a house that they cannot choose as it is not on their identity card and they don't control a card of that house. Since Cannot effects take precedence, Chris may freely choose their active house.