So, as we all know Ancient Tomb is an incredibly powerful card and a Vintage staple; however, I've noticed that it doesn't see much (if any) play outside of Workshop decks. So - why exactly is this?
A quick analysis of the pros and cons of the card:
Pros:
- Adds

to your mana pool, which can be a huge tempo boost on turn one or two.
- Makes it easier to play around Stax pieces.
- Fits into just about any deck that doesn't need early heavy color requirements (i.e. turn one

or

).
Cons:
- The damage from it can be relevant if you're using Dark Confidant or a lot of fetch lands.
- Doesn't add colored mana to your mana pool.
- Can 'color lock' you if your deck includes a lot of off color mana sources.
- Wasteland-able.
For me, the fact that it's a maindeck answer to Workshop decks that is relevant in
every matchup is a huge point in its favor; add in that it can allow you to play pretty much any Vintage card on turn two and it becomes an even more powerful addition to a deck's mana base.
I understand that in a deck which needs a lot of early colored mana for something like Mana Drain, Kataki or Hymn to Tourach could make it difficult to include in some decks, but I feel that due to the fact that a huge amount of Vintage staples only need one colored mana at most that's not a problem for most decks.
So, with those points in mind - why isn't it seen outside of Workshop decks very often, and could it become a part of other archetypes' mana bases?
Thanks for reading!