Gimli, Son of Gloin

Dash {2}{w}{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 next end step.)
You may exert Gimli, Son of Gloin as he attacks.
If you do, target creature must block him this
turn if able. (An exerted creature will not
untap during your next untap step)
"We Dwarves are natural sprinters!"