Elijah's Banner

Elijah's Banner enters the battlefield tapped.
{t} : Add {w}, {u} or {r}.
{t}: Scry 2.
{1} {t} : Add {w/u} {u/r}
{3} {t} : Add three many of any combination
of either {w}, {u} or {r}.
Not even a sound is heard after battle. Only birdsong.