Wrath of Galadriel

(You may cast a legendary instant only if you control
a legendary creature or planeswalker.)
Target creature gets +5/+3 and gains
menace, trample and double strike until end of
turn.
Take an extra turn after this one.

"You have no power here, servant of Morgoth! You
are nameless, faceless, formless. Go back to the void
from whence you came!"