Sandalphon + Lobelia route for Lucilius Hard magna solo.
Hi, it's me, your budget DJSalt. Since he didn't do any new magna solo since Grand Sandalphon I decided to do one. He covered a lot of the concepts in his tutorial videos with Titan so if you haven't seen it already and want to know the general strats here's the link to it. https://www.youtube.com/watch?v=2lId5sZK0ac
The main issue with Magna is not having Garrison makes tanking Paradise Lost much more painful during pre 50% wing and labor clear, and more importantly sub 25% is even more of a nightmare than with Titan. You can wipe from about half hp very easily if he decides to TA and you don't have 75% cut, so almost every turn has to be tanking a diamond trigger or a Axion Apocalypse trigger.
You pretty much have to do wing route since taking repeated PLs without Draconic on a body route is not sustainable, while running Draconic makes your damage output pretty weak and you're likely going to run out of time. Gilgamesh is our way to tank PLs more easily, it can be replaced with Water buncle but it has less stats and call isn't as good.
Important thing going into labor phase is to use Water coat and protect it with Mahira buffs and your Yggdrasil calls, so make sure not to summon more than 1 yuggu before labor phase. The big RNG point is how quickly you clear labor X. Not clearing that reasonably quickly really sucks since you need a lot of Mahira blue potions and the random debuffs can mess you up pretty badly. You just have to pray Mahira and Sandalphon cooperate and land their debuffs ASAP, otherwise it's a very painful experience. You can clear labor 11 either by waiting for your buncle/Gilgamesh to come off cooldown by stalling with Prison of War/delays/gravity, or you can just eat it with 25% cut and take the pain with a blue pot first. Since I missed a delay I had to do the latter, but the former is safer.
In the final phase the main issue is Lobelia Magic Crest stacks. It's very important that you waste as little crests as possible going into the final phase as turn acceleration RNG can very easily desync your water switch and/or make you run out of stacks. Sometimes you want to hard wait out the cooldown for Sandy S1 when you're tanking triggers with Mirror, as its more important to have Crests for sub 10% where you're forced to tank at least one round of autoattacks.
Overall this version is surprisingly more difficult than expected and doing S. Alexiel based route is safer, but might be more reliant on good summons for DPT check. The main upside of this version is summons are really F2P friendly, you can run Tower/Justice/water buncle/Celeste ULB and still be fine.