Janthrex the Shrewd Tinkerer

any nonland cards that produces any color of
mana under your control deals one damage each
to any target if the cards are tapped.
as long as Janthrex is in the battlefield his
controllers noncreature spells that deal damage
will deal an extra 1 damage.
Melt—each time an artifact or artifact creature
enters on your turn, deal 1 damage to any target.