Gwindalor, King Descendant

Flying, first strike
When Gwindalor, King Descendant enters the battlefield, if you control The Sisters of Twilight,
mount it to this creature.
Mounted creature gains flying and vigilance.
Mount {2} (Pay {2}, mount target creature you control
to Gwindalor, King Descendant. All damage dealt to mounted creature is halved and transferred to this
creature.)