Scaled Nurturer

{T}: Add {G}. When you spend this mana to cast a Dragon creature spell, you gain 2 life.

Dragonlord's Servant

Dragon spells you cast cost {1} less to cast.

You may look at the top card of your library any time.
You may cast Dragon spells from the top of your library.

Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.

Lightning Bolt deals 3 damage to any target.

Dragon spells you cast cost {2} less to cast.