What are gems and premium currency for in Dragonfire?

Dragonfire uses several currencies, some premium (buyable with money) and some earned by playing. Notably:

• Gold (speed-ups, openings, various purchases)
• Premium Dragonfire Gems (visible in the resource bar)
• Event currencies like Valyrian Tablets (a daily login reward, tied to Heirlooms)

The general logic: premium currency mainly serves to accelerate (timers, chest openings, packs) and to unlock faster what the game also gives you for free.

Neutral advice: keep your gems for permanent or high-leverage uses (stars, key Habits) rather than burning short timers. Premium currency spent on a temporary gain vanishes with the Reign.