Even though this is quite a costly attack, Gholdengo could be used as a finisher as well
I assume this is because they have sweet art, are good for storage, and there is probably someone out there who collects them
This sounds minor, but it actually gives you a lot more control over the outcome of each explore, letting you choose between extra lands and extra on-board power as needed
5 - Beatrice, Lady of the Eternal Beatrice, Lady of the Eternal is another card used in Tearlaments nowadays, but it has a long history in the game, besides being a historically controversial card, and, as a result, limited currently
For instance, a fan that submits their Pokmon card for grading may lose all potential value if the card doesn't come back with a perfect grade of 10
I still like that it rewards playing more colours, but even if you're playing 4C control or something, it is hard to get out that many differently coloured permanents, so the flashback actually being worth six mana might be a problem