Creature — Hound
As long as you control an artifact, Scrapyard Mongrel gets +2/+0 and has trample. (If it would assign enough damage to its blockers to destroy them, you may have it assign the rest of its damage to defending player or planeswalker.)
Trespassers are welcome to try.
Magic 2015 Core Set (M15)
Illustrated by: Svetlin Velinov
Multiverse ID: 383372