The classic Onslaught mono-colored lands, including Forgotten Cave and Lonely Sandbar, have been staples in casual and competitive decks for years
As face-up Continuous Traps, they give constant buffs to all of the Duelists Warrior monsters
According to a recent reveal on the Magic The Gathering website, 7 of the 63 cards to be featured in the archive will not be usable in the format that was designed to give players use for their otherwise out-of-play cards
and Darkness Metal, the Dragon of Dark Steel
As long as fetchlands remain legal in Modern, these two cards cannot be
Overall, I would give this line a 4 out of 5 rating, if you're building a water type deck, or a deck for defeating BREAK Pokemon, I would give this line a look