Giant Eagle

Flying.
Mount 3 (Tap a creature you control with 3 power
and attach it to Giant Eagle. As long as that creature
is tapped and attached to Giant Eagle, this becomes a mounted unit. It stops being a mounted unit if either
leaves the battlefield or the rider becomes untapped.
You may choose to keep the rider tapped at your untap
steps. Mount as a sorcery).
If this is a mounted unit, Giant Eagle gains first
strike if attacking or blocking.