I peaked masters so this guide isn't meant to be a meta build, just some theorycrafting for if there's ever a patch where 4 Artillerist is op. Honestly i just like seeing Trist's balls get big.
Also I've never made a guide before so this is gonna be jank.
Core Chunks

















Theory
As you can see, there are a lot of inherent synergies surrounding Artillerist, Academy, and Sentinels to play around in the mid-game. Urgot is also great because his ability provides inherent shred, and he slots in perfectly wherever Trist fits.
The beauty of this line is how flexible is based on early AD starts. Since all of the Artillerists are AD carries, you only need one source of shred for your 2-3 itemized carries to shred through fights front-to-back. Plus, with Tristana as the comp's ideal carry, there's potential to scale into the late game. Academy is a great splash in the late game if the item is useable by a tank or an AD carry because backline Jayce's forge makes the Artillerists go crazy.
Tristana's ideal items are Rageblade, Infinity Edge, plus one to synergize with her AD stacking. Last item should usually be Last Whisper, but it can be an Academy item if it's something like Hurricane or Deathblade.
Ezreal wants the Academy item if useable and probably prefers Red Buff over Shojin as his mana item so he can apply antiheal and get more cannonballs off, but idk. He can also probably hold Last Whisper pretty well.
Here are some sample mid-game boards.
Standard 2-Cost Reroll; Splash Mutant or Conq + Formswapper


































Academy Start; Splash Mutant or Conq + Formswapper

































Academy/Rebel/Sentinel Variant


























Late Game
Whether you've gone the reroll route or the Acadmy/Rebel route, you cap out your board by filling out the corresponding splash traits of whatever you hit or add 4 Artillerist.
For example, if the other Academy items are good, drop splash traits and add vertical Academy; go vertical Emissaries and add legendaries; if you get early Rumble upgrades add Corki for Artillerist, Scrap, Sentinel; give a fellow Artillerist Rebel or Conqueror spat and splash Jinx/Morde; if you had an early Conqueror start, splash Rebel, Sentinel, Conqueror.
Emissaries + Legendaries



































Spatula Splashes



































Vertical Academy































Conqueror Emissaries












