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The first ability of Conduit of Worlds doesn't change the times when you can play those land cards

You can treat them as a perfect balance, or as one color tinged by the other, or as something more like Color A scaffolded with Color B. Rorschach, for instance, uses black methods to achieve white ends, whereas Machiavelli uses white methods to achieve black ends, and Harvey Dent/Two-Face from Batman simply switches back and forth between all-white and all-black.) UR Blue and red taken together are the colors of creativity

I have never played professionally but even in casual constructed, things are a lot more polar as you pointed out

You also get two devotion for three mana on the battlefield

You only really need to pull off one set of triggers to make it worthwhile