Nephite Rider

Whenever Nephite Rider attacks, create a token
that's a copy of another target attacking creature
and that's tapped and attacking. Exile the token
at the end of combat.
Dash {2}{r}{r} ( You may cast this spell for its dash
cost. If you do, it gains haste, and it's returned from
the battlefield to its owner's hand at the beginning
of the end step.)