Does Flame Chompers require you to pay both its printed cost and the fury cost when playing it from discard, or just the fury cost?

Ruling: You only pay the fury cost, not the printed cost. The fury payment is an alternate cost that replaces the normal cost.

Nuances:

• The card text does not explicitly say "ignoring my cost" even though functionally it works that way
• "Alternate cost" is not formally defined in the core rules, but this ruling was confirmed by developers during spoiler season
• This same templating issue applies to other cards like Immortal Phoenix