I was just skulking around the old Fate Reforged Thread when I ran into this quote from Finn. . .

Quote Originally Posted by Finn View Post
Humble Defector with Homeward Path should be good. We should be excited. But compare it with Treasure Cruise for a moment. It is not even on the same planet in terms of power level.
But now that Treasure Cruise is gone. . . should we explore Defector/Path again? It's a pretty powerful draw engine - that isn't in blue. I doubt blue decks will want to run it, since it takes up a lot of cards, and the blue shell works well enough that it doesn't need something like this. Additionally they would rather turn to Dig Through Time.

What deck or archetype can this card be used in and why?

As stated this is a very powerful - if - vulnerable draw engine. I would suppose that a non-blue deck could run it. I don't think existing decks will want it however, since it does take up a lot of room.

How has the metagame changed or what new cards exist now to make this card playable?

As the quote from Finn stated - when we first saw Defector/Path - we should have been a little more excited. I mean people, were excited, but no one tested the draw engine. There was no point with Cruise around. But now Cruise is gone. . .

Sample Deck List

I didn't include numbers, but i doubt the correct numbers are 4 offs for Defector/path. The idea of this deck was literately Defector/Path - Now I need cards to search for them . . . oh they also search for other lands and they are red green. . . so Punishing Fire. DRS - so I got black in there, and etc. . . . In the end. . . it came out looking a little like Punishing Jund. I don't know if that's the best direction to take.

4 Humble Defector
4 DRS
4 Dark Confidant
4 Tarmogoyf
2 Bloodbraid Elf

4 Abrupt Decay
4 Lighting Bolt
4 Thought Seize
4 Punishing Fire
4 Worldly Tutor

4 Homeward Path
4 Grove of the Burnwillows
14 Other Lands Lands