wotc
The X in the ability has the same value as the X paid in the Morph ability. This is pretty easy to derive since there is no other source of X.
MTG · Card
◇ Catalog #104
Bane of the Living
c19·#104·rare·nonfoil
Illus. Filip Burburan
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in vault
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for trade
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wishlisted
Aug '19
6 yr ago
Value
$0.34+$0 (+3.0%)
30 days high $0.34 · low $0.32
Volatility · moderate
EUR€0.33USD$0.34
NM$0.34
Where to buy / sell
Search links · prices vary by venue
Buy this card
Played in EDH
EDHrec rank #9,231 · Niche pick
Variants
Gameplay
Creature — Insect
Morph {X}{B}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
When this creature is turned face up, all creatures get -X/-X until end of turn.
4/3
Legalities
tlrnot legal
duellegal
brawlnot legal
pennynot legal
PreDHlegal
Rulings · 2
wotc
The trigger occurs when you use the Morph ability to turn the card face up, or when an effect turns it face up. It will not trigger on being revealed or on leaving the battlefield.
Notes
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Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Filip Burburan
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.