Following their recent appearance in February's Pokmon Brilliant Stars TCG expansion, Alternate Art cards have become massively popular with collectors and fans
Both paths through Tomb of Annihilation feature room effects which should cause a Sefris trigger from discarding or sacrificing creatures (including tokens), but if Sefris was already the reason we were venturing in the first place her once per turn stipulation means we cant take advantage
It's a huge card across all formats, thanks to its Affinity for creatures, meaning for every creature you have on the battlefield, it costs one less colorless mana to cast
All you need is a Fabled Passage or an Evolving Wilds in your graveyard, and you'll be able to play it, sacrifice it to find another land, and then put it back into your graveyard all in the same turn, every turn
This makes it really important to remove your lands from the deck before bothering to go off
Playing a bunch of enchantments and drawing a ton of cards set up a powerful control deck thats a little different than the traditional strategies of blue countermagic and board wipes