Spindash Chain

Gotta Go Fast! (If you have no speed, it starts at 1.
It increases once on each of your turns when an opponent loses life. Max Speed is four.)
Target creature you control deals damage equal to
its power to target creature, planeswalker, or player.
If this destroys a permanent, you may immediately cast this card again for {3}{r}.
The cost to recast this card is {1} less for every point
of speed you have, to a minimum cost of {r}.
You may recast this card a number of times equal to your speed.