Those are really high power effects is the problem, if we got anything even close to that, it gives us just as much as it takes.
50 feet sounds like the ultimate Area Denial, so long as we kept it in a special part of the ship until we needed it and then had whoever had the highest health dump it in an area with enemies, or Even just the fact that it makes EVERYONE in a 50 foot radius burn would make it interesting item for combat, it has upsides within the downside itself.
Well the idea is that 'Activating" it in any capacity wouldn't happen, ((or if it Automatically activated, that we just kept it handy for when that would be used, like making it into a crossbow bolt)), and this is just a feasible item otherwise for general murderhobory.
Permanently molten metal makes a great weapon applicant, or poison for that matter. Just Jar it up like the Crystals and Goop. If it is permanently molten, that makes it a huge thing for Other weapons, like storing it in Non-molten object to make a permanent red hot item.
If it is summoning creatures from the plane of fire, that has an absurd amount of abuse potential, Just imagine it, Gozer becoming a 100 Statue abomination as Dackly and him Farm them in a closed room with a healer, or we could try Diplomacy, Or try to science it into a 2 way portal.
Really the reason it wouldn't and shouldn't is that that those effects are too high-potential. What if we gave any of those to our resident "Gets stronger the more damage she takes" person?
If i had to be honest, Molten metal and Perma-burning are probably the worst, since one is vaguely useless, and the other does have some legitimate risk to party members.
But hopefully, none of that will come to be, since It is 1 Fireball, a crystal, a petrify, some earth magic, 1/100th of a phazon crystal, metal, and stone. I just hope it doesn't "lolexplosionagain".