dragonfly
I cast Ember Island Production, copying my Dragonfly Swarm, but the token did not have the 2nd ability of “This creature's power is equal to the number of noncreature, nonland cards in your graveyard”, so it was only a 4/4 that did not have extra power due to the instants and sorceries in my graveyard.
hieuyui#72179
shared this idea
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Rezzahan#77802
commented
It's a characteristic defining ability. And since the copy effect sets a specific value for the characteristic that ability would also define, it is not copied.
707.9d When applying a copy effect that doesn’t copy a certain characteristic, retains one or more
original values for a certain characteristic, or provides a specific set of values for a certain
characteristic, any characteristic-defining ability (see rule 604.3) of the object being copied that
defines that characteristic is not copied. If that characteristic is color, any color indicator (see
rule 204) of that object is also not copied. This rule does not apply to copy effects with
exceptions that state the object is a certain card type, supertype, and/or subtype “in addition to
its other types.” In those cases, any characteristic-defining ability that defines card type,
supertype, and/or subtype is copied.