The next two cards are specialthey depict the same scene but from two different perspectives
That combo is what makes them so absurdly good: Underground Sea, for example, is both an island and a swamp, so it works perfectly with fetch lands and fixes your mana super smoothly
A cheap, aggressive threat that turns Relic of Progenitus and similarly efficient graveyard hate into burn engines sounds intriguing to build around and potentially quite powerful
It draws equal to your biggest power, and note that's not targeted, but just when it resolves, and then instant speed is great too since you can do it when it's removed to draw or just to dig or EOT to just use your mana
For the price of four ink, you get a bit of pretty much everything: defence, lore, the ability to draw cards and the power to heal your other characters