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Whenever Syr Faren, the Hengehammer attacks, another target attacking creature gets +X/+X until end of turn, where X is Syr Faren's power.
If Syr Faren leaves the battlefield before its triggered ability resolves, use its power as it last existed on the battlefield to determine the value of X.
If Syr Faren's power is negative as its triggered ability resolves, X is considered to be 0.
The value of X is determined only as Syr Faren's triggered ability resolves. Once that happens, the value of X won't change later in the turn even if Syr Faren's power changes.
