Just climbed to masters with this list. Pretty simple deck to pilot, and very fun!
Lethrai Gambit is a criminally underrated card. I've used it in conjunction with other damage cards to burn out mono red scumbags as early as turn 5/6 because they always think they can race me.
Eilyn, Hand of the Tempest +
Dichro's Ruin is our primary wincon combo for slower decks. Dichro's Stacks Eilyn's ult very quickly when paired with a bunch of nightfall triggers and other burn cards.
Transpose market is quite good here because we can often afford to hold the 2 mana to decide what to market on opponent's turn since we have a few other fast spells. Feels very refined to me, but change suggestions are welcomed!