Arcane Sprinters

Haste
Overkicker {3}{u} (Whenever this creature attacks,
you may pay {3}{u})
When Arcane Sprinters attacks, if it was
overkicked, it becomes unblockable and gains
"whenever this creature would deal combat
damage to a player, you may prevent that damage.
If you do, draw a number of cards equal to the
prevented damage" until end of turn.