Realm of the Spirit Dragon

{t}: Add {c}{c} to your mana pool. Activate this ability only if you control three or more lands.
{t}: Add one mana of any color to your mana pool. Spend this mana only to cast an Dragon creature spells or activate Dragon abilities.
Colorless spells and Dragon spells you control cost {1} less to cast.
"Here I can complete my studies." ~ Ugin