Roadhog, Junker Exemplar

Menace, trample
When Roadhog, Junker Exemplar enters that battlefield, artifacts you control gain, "{1}, {t}: This artifact deals 1 damage to each opponent. Whenever you cast a red spell, untap this artifact." for as long as you control Roadhog, Junker Exemplar.
"I'm a one-man apocalypse!"