{T}: Add {U}. When you spend this mana to cast a Dragon creature spell, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
If more than one {U} produced by a Lapis Orb of Dragonkind is spent to cast a single Dragon creature spell, the delayed triggered ability associated with each mana spent will trigger. You will scry 2 that many times.
The delayed triggered ability will trigger whether Lapis Orb of Dragonkind is still on the battlefield or not.
The mana created by Lapis Orb of Dragonkind can be spent on anything, not just Dragon creature spells.