How do dragon Habits work in Dragonfire?

Every dragon has 5 Habits (permanent passives), each one upgradable over 5 levels. The life of a Habit:

locked → unlocked (lvl 1) → raised to lvl 5.

Two separate steps:

1. Unlocking the slot: a Habit unlocks at a Star Rank milestone of the dragon (locked panels read "Get N star(s) for [dragon]"). Count on roughly one Habit every 2 ranks.
2. Raising it (lvl 1→5): with chest materials — one Breedmark + one Core matching its rarity (🔵 Rare / 🟣 Epic / 🟡 Legendary).

So a dragon can have plenty of stars but few Habits actually raised. Habits weigh heavily in a dragon's power (up to 5 stacked effects at lvl 5).