Furnace Dragon

Oracle Text

Affinity for artifacts (This spell costs 1 less to cast for each artifact you control.)

Flying

When Furnace Dragon enters the battlefield, if you cast it from your hand, exile all artifacts.

Card Rulings

9/20/2013 If a creature (such as Clone) enters the battlefield as a copy of this creature, the copy’s “enters-the-battlefield” ability will still trigger as long as you cast that creature spell from your hand.