Meg Canix, Goblin Saboteur

Unleash
{2}{b}{r},{t}: Target artifact creature gets Overheat
until end of turn. If Meg Canix has a +1/+1
counter on it, that creature gets trample as well.
At the end of turn destroy that creature, it deals 2
damage to any target. (This creature gets +1/+0 for
each Mountain on the battlefield until end of turn. It
does not untap during its controller's next untap step.)
Partner