If you're trying to take a Holy Fire setup into real endgame in Path of Exile 2, you'll learn fast that "good enough" gear starts feeling awful. A Rage Core Siege Crossbow with +7 to projectile skills and some flat fire already has the bones, but it still needs that one nasty Desecrated prefix to turn every grenade into a screen-wiper. I tend to stock up first, because nothing's worse than standing at the Well of Souls with an empty stash and a half-baked plan, especially if you're juggling PoE 2 Currency and don't want to burn it on panic clicks.



Get your kit sorted before you touch the Well
People rush this part and then act surprised when the craft goes sideways. Don't. Bring the Omens that actually matter for Abyss crafting: Omen of Sinistral Necromancy and Omen of the Liege if you're hunting those Amanamu-only lines, because without them you're basically rolling the dice with training wheels off. Then there's the one you really feel in practice: Omen of Abyssal Echoes. That reroll on reveal isn't "nice to have", it's the difference between settling and walking away with something you'll keep for weeks. You'll also want your base cleaned up and ready so you're not making decisions while your brain's fried.



Desecrate the crossbow and only chase the right prefix
Use a Preserved Jawbone to desecrate the crossbow and open the modifier slot, then slow down and read what you're being shown. You're here for damage, so treat this like a one-job mission: pick a prefix that actually scales your main skill pattern. High-tier grenade mods are the dream, especially the big "increased Grenade Damage" rolls that jump your burst without messing up your rotation. Fire penetration and extra projectiles can feel tempting, sure, but if your build is already clearing fine, the raw grenade scaling usually does more for bosses and chunky rares. And with Abyssal Echoes in play, you can afford to say "nope" once and look again.



Finish the suffixes without bricking the item
After you've locked the desecrated prefix, the rest is controlled gambling. A Greater Exalted Orb or an Omen of Greater Exaltation can finish the suffixes, but you're still at the mercy of RNG, so have a shortlist of what you'll accept. Mana sustain is the big one for a lot of Holy Fire grenade setups, so "physical damage leeched as mana" is a roll that immediately changes how the build feels. Miss it and you might end up patching with flasks or passives, which is workable but annoying. Once the mods are in place, don't forget the boring wins: quality it properly with Whetstones and cap the sockets with Artificer's Orbs, because skipping basics is how a "god craft" ends up feeling oddly mid, even if you spent a pile of path of exile 2 currency to get there.Welcome to U4GM, where PoE 2 endgame talk stays practical. Working on a Rage Core Siege Crossbow for a Holy Fire grenade build? Get your Omens lined up, hit it with a Preserved Jawbone, and let Abyssal Echoes save your run with that one reroll when the Desecrated Mods show up. When you're chasing juicy Grenade Damage or clean suffixes like mana leech and you're running low, top up at https://www.u4gm.com/path-of-exile-2-currency then hop back in and finish the craft your way.