Best of luck! I'd make a few suggestions. Every magic deck you run into is going to be using minimum 8x board clears (2x tracking bolt / Shaped Blast / Unannounced Arrival / Unbound Flames). You need some ward. Sailweaver is a nice 1 mana drop with ward.

Next, I would absolutely run 2x Wrong Path rather than excommunicate. It's useful in many more situations. Note quite as useful for removing a Guild Enforcer (because it just comes down next turn), but I think on net WP is better.

You have a lot of singletons in your deck. I'd consolidate for consistency. For example, run 2x Pacifists instead of 1x Pacifist and 1x Martyr. I think with your comp and aggro focus, Pacifist is probably better.

Anyway, those are just my thoughts. Hope you have a solid weekend ranked!