This deck has been play tested and is strong, not to mention a ton of fun to play
As long as cheap spells exist in Modern, Chalice will reign supreme
First, whenever a creature you control dies, each opponent has to exile a creature of their own--this reminds me of a card like Grave Pact, only better because the casting cost is two Black versus three Black and exiling is better than sacrificing
Dragons is a great choice if you like tuning decks, but you'll probably want to look elsewhere if you are looking for broad cards that can send you in a bunch of different directions
Reprieve Reprieve is our white Remand, but its slightly better in the sense that you can bypass creatures that cant be countered, like Toski, Bearer of Secrets