The Speed Demon (Borderless) [Aetherdrift]

Set:	Aetherdrift
Type:	Legendary Creature — Demon
Rarity:	Mythic
Cost:	{3}{B}{B}

Flying, trample
Start your engines! (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 4.)
At the beginning of your end step, you draw X cards and lose X life, where X is your speed. You've got the dream machine. I've got the nightmare mach-ightmare.