Please feel free to upvote and give any suggestions! Work in Progress.
The Core
Young Pyromancer: This deck is built around the pyromancer and Jeskai Ascendancy-build a huge board and pump them up with instants and sorceries that kill things and draw cards.
Monastery Mentor: Another great token maker and the main win-con of the deck.
Jeskai Ascendancy: Basically the engine of the deck, allowing me to filter my draw and pump my creatures
Instants and Sorceries
Opt: Just a cheap draw spell that synergies with the shell.
Wild Slash: cheap removal that helps against aggro.
Izzet Charm: fuels the graveyard for Treasure Cruise while drawing cards, counters removal spells and helps get rid of small creatures.
Valorous Stance: Both modes very effective in this deck- can make my Young Pyromancers or my Jace, Vryn's Prodigy
s indestructible, while also destroying creatures that my other removal can't deal with.
Treasure Cruise: Great with Jace, Vryn's Prodigy
and easy to cast due to the abundance of looters and low cost instants and sorceries.
Chart a Course: Still unsure about this one, I was needing more gas mid game so I added one.
Creatures
Jace, Vryn's Prodigy
: Super good with Dig Through Time and easy to flip. provides a lot of gas late game and can even give me more tokens with Dragon Fodder, Young Pyromancer and Hordeling Outburst.
Young Pyromancer: The decks built around the pyro. She does everything.
Monastery Mentor: Another great token maker and the main win-con of the deck.
Sprite Dragon: just a good threat.
Improbable Alliance: makes more tokens! and they have flying.
Engine
Jeskai Ascendancy: Every card in the deck synergizes with this card. It is the wincon and the engine.
Maybeboard
Seeker of the Way: Very strong against aggro, which could be a tough matchup given the lack of removal spells in the deck.
Fiery Temper: There is already an abundance of looters, so this card could potentially fit right in.