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Shadow (This creature can block or be blocked by only creatures with shadow.)
{B}{B}, Sacrifice this creature: Destroy target blocking creature.
If an attacking creature has multiple evasion abilities, such as shadow and flying, a creature can block it only if that creature satisfies all of the appropriate evasion abilities.
Multiple instances of shadow on the same creature are redundant.
Once a creature has been blocked, that creature remains blocked and will deal and be dealt combat damage even if it gains or loses shadow or if the blocking creature gains or loses shadow.
This creature does not have to be an attacker or blocker to use its ability.
