Théoden, King of Rohan

Whenever Theoden, King of Rohan or another
Human enters the battlefield under your control,
target creature gains double strike until end of turn.
"The horn of Helm Hammerhand shall sound
in the deep one last time. Let this be the hour when
we draw swords together. Fell deeds awake.
Now for wrath, now for ruin, and the red dawn.
Forth Eorlingas!"