First of all, Absolute Virtue is from Final Fantasy XI: Chains of Promathia, but some people have possibly seen it in Final Fantasy XIV where it appeared as a boss in the Baldesion Arsenal (But then again, a lot of players of XIV didn't / don't do Eureka either, soooooooo...)
These cards are excellent in aggro decks as you rarely need to reach more than five mana (most winning aggro decks should end their curve at four mana, with Hellrider/Hero of Bladehold-type threats) so the ability to not draw dead on a land is a huge boon
Shelob, Child of Ungoliant | Illustration by Lorenzo Mastroianni Tribal/typal commanders are legendary creatures that effectively support one or more creature types
One, it grants all your noncreature spells convoke, so you can use your creatures to cast them
Plague Rats, most obviously, is non-functional in a context of 60 card minimums and 4 per card maximums, but is hilarious and brutal in a 40 card minimum environment where an opponent may have a dozen or so Rats