Dies to Removal

with a slegdehammer build like that with a higher curve i wouldn't be surprise if its just an extra white source with scry.

edit: you could also use it to mess with your opponent so they think your running jeskai.

deflecting palm: bad against small agro good against midrange/ big guys. If you don't likeit, don't run it. Where the deck is already solid against small creatures it dosen't hurt to shore up g1's against midrange/big guys. as a 2 of the chance to get both in your opening hand is so small agruing about mulls is stupid and you can always side it out in favor of something else if it comes to that.

Resolute Archangel is nice but at 7 mana when we only run 4 painlands and we have mb seeker it probably doesn't belong in a deck like this. Kind of on the fence for rabble mb, it's definitely a clock but as you said its prone to getting walled and feels like he'd be more at home in a deck with anthem effects for his tokens. Firedancer is very much a meta call, if you're seeing alot of aggro decks hes better mainboard, though probably best in the side.