If a source provides more than one mana, the extra is lost
Raffine, Scheming Seer While The Watcher in the Water has a typal subtheme, Raffine, Scheming Seer has a clear go-wide subtheme
For example, your Village Rites gets you another creature to play next
Not only do they help with your color fixing, there are tons of other benefits fetch lands provide as well
That does some wild stufffor example, it gets Marsh Flats back twice for actual land ramp in Orzhov, it lets you feed cards like Dusk Legion Zealot into a Warren Soultrader multiple times, or it wrings the most value possible from cards like Boromir, Warden of the Tower and Dauthi Voidwalker
We've got an artifact card draw write-up ready to help you rock and roll, but this one will cover non-artifacts, such as lands, colorless creatures, and colorless spells