Speed 6

The construct took to the air once more, and Jace dived under it, rolling to his feet and sprinting as fast as his wounded leg would allow. The entire floor shuddered as the beast landed and took off in pursuit. Swiftly, all too swiftly, the vibrations beneath him grew stronger, and he knew the construct was gaining.

A third dive to the side, but the machine had learned to anticipate the trick. A leg lashed out, pinning the hem of Jace's cloak to the floor. Yanked backward in midair, choking through a bruised throat, he landed hard on his back and lay still as the tower spun dizzyingly above. Only the creak of metal, the image of the construct's bulk heaving into sight above him, spurred him to action once more. Tearing open the cloak's broach he rolled swiftly to his right. One leg, a second, a third pounded the floor mere inches behind him as he rolled-and then a fourth came down in front of him, and only a desperate heave that agonizingly pulled every muscle in his torso kept him from barreling right into it.

Agents of Artifice (Magic The Gathering: Planeswalker Book 1) (p. 411)