At this rate, Muraganda Raceway may be relegated to Commander decks that can reliably trigger Max Speed on each turn
But that means the Red cards that are good in Prosper are good here too: Rain of Riches and Goldspan Dragon are two awesome inclusions
Grolnok, the Omnivore will also take any Frog you can find
If you cast a creature spell this way, it gains haste until you lose control of that creature (or, in rare cases, you lose control of the creature spell while its on the stack).
Even with the simplistic color choices, this card stands out as the most unusual in the set, thanks to the overwhelming focus on black, white, and gray that contrasts with the more vibrant blues, greens, and yellows of Venusaur and Lucario
That said, you do get to decide when you play it, and casting it in response to a creature with an ETB or something is likely to feel pretty good