Deck looks interesting. A nice dose of aggro to keep the opponent busy and then suprise them with a late game
Angrath's Marauders.
I like
Trove of Temptation, if you get off to a good start it effectively takes out one of their blockers each turn and also ramps you.
I also like
Hungry Flames, I feel it is an underrated card as it can deal with a blocker and get in some face damage.
I would suggest is adding in some
Ramunap Ruins for some more late game burn, effectively doesn't cost you extra cards.
Could also add in some Sunscorched Deserts for some more damage. Being mono coloured it should't hurt your mana base too much and it gives you extra deserts to
fling.
As it is quite expensive, another suggestion for
Captivating Crew would be
Kari Zev's Expertise.
Cast it the turn after
Angrath's Marauders and you can hit them with their biggest creature and follow it up with a free
Lightning Strike.
At 3 mana you should be able to fit in Insult also for quadruple damage.
Another thing to consider is the free spell counts towards flipping
Vance's Blasting Cannons.