Block two of their guys and blast another is likely enough to finish the job
It stays a land when you activate it, so it can be nice later in the game when you're flooding out and need things on board
As long as nobody destroys the enchantment, Tortured Existence transforms your graveyard into a potent resource for essentially sacrificing creatures to resurrect others over and over again
They protect your unsleeved cards from being scratched up in the deckbuilding phase, and they make it SO much easier to pick up individual cards instead of sliding them to the edge of the table
With Abyss Proxy Shop, you can play with Witch-king, Bringer of Ruin and every legendary Commander staple you need all without spending a fortune
Emerald players can now reap the benefits of forcing their opponents to discard their hand while stealing a few extra bonuses for themselves with emerald Rise of the Floodborn cards like Prince John, Greediest of All - who allows you to draw a card for each one your opponent discards - and Flynn Rider, His Own Biggest Fan, who gets more effective at questing for lore the fewer cards your opponents have in their grip