Thought Vessel is a decent mana rock, but the deck already has quite a few mana rocks, and having an unlimited hand size doesn't seem like it's all that useful
This not only provides artifact creatures with extra value, but it allows noncreature artifacts to be used in more aggressive ways than normally possible
Whenever Grimgrin attacks, destroy target creature defending player controls, then put a +1/+1 counter on Grimgrin
I really like Chandra, and I think even in the non-Burn red decks, I would play a few copies in the sideboard as a card to bring in against midrange and control decks
Its a wonderfully devious mechanic that makes Sapphire/Steel feel like a ton more fun than it ever used to
Whether you're opening boosters, sorting through prerelease pulls, or keeping tabs on the market for trade value, it's clear this set is drawing serious attention