First printed in Doctor Who (2023)
All 4 prints
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Doctor Who (WHO) #358, 2023
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Doctor Who (WHO) #43, 2023
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Doctor Who (WHO) #648, 2023
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Doctor Who (WHO) #949, 2023
Flatline 
Instant
Creatures your opponents control have base power and toughness 0/1 until end of turn.
"We've found the missing people—they're in the walls!"
—The Twelfth Doctor
- Illustrated by
- Filipe Pagliuso
Legality
- Legal in
- Legacy, Vintage, Commander, Duel Commander, Tiny Leaders, Oathbreaker
- Not legal in
- Standard, Pioneer, Modern, Pauper, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Gladiator, Pauper Commander, PreDH, Brawl, Standard Brawl, Competitive Brawl
Rulings (2)
- Flatline affects only creatures your opponents control at the time it resolves. Creatures they begin to control later in the turn won't change power and toughness.
- Flatline overwrites any effects that set a creature's power and toughness. Any existing effects or counters that raise, lower, or switch a creature's power and/or toughness continue to apply to the creature's newly-set power and toughness.