Dive Down is of interest to me mainly for how well it slots into the Azorius Abhorrent Oculus deck, which utilizes lone threats like Oculus, Monastery Mentor, and Haughty Djinn
Historically, organizing hundreds or thousands of unique creatures across different eras was a headache
Looking for more aggressive options for mono-black decks, they decided to remake one of their favorite black aggro creatures as a Vampire: Exodus 's Carnophage
For the price an ETB comes in at, I think this set is definitely slept on
The extra benefit this one brings is that if you use enough mana in a turn to cast spells, you get to recur something for free
It is a 3 cost blue enchantment that allows you to draw a card each time an opponent casts a spell, unless they pay 1 mana to stop you doing so