Really wanted a Sage Staff and had resisted the desire to indulge my inner FF5 fanboy for the last event, so I went hard on the second FF5 banner with my mythril stock. Results:
100 gem: Some 4* item I've forgotten
50 mythril: Brave Blade, Nodachi, Hayate Bow (third), rest 3*
50 mythril: Brave Blade, Crystal Bangle (fourth), rest 3*
50 mythril: Soldier Sword VII, Sword Breaker VI (eighth FFVI 4* dagger >_<), Rune Axe V, rest 3*
50 mythril: Lilith Rod, Variable Steel X, Crystal Armor V (second), rest 3*
50 mythril: Warrior's Sword X, Ten-Gallon Hat VIII (second), Hayate Bow (fourth), rest 3*
50 mythril: Lilith Rod, Crystal Sword VI, Crystal Armor V (third), rest 3*
50 mythril: Brave Blade, Sage's Staff, Ninja Suit, Cat Claws II (fourth), Power Glove XIII, Maneater VI (NINTH 4* FFVI dagger, jesus christ RNG), rest 3*
Objectively not the best use of so much mythril, but in the end I'm pretty happy with the results. I'm set on VII and X weapons now, let alone FFV. Ultimate Exdeath is going down hard on Monday after I finish level grinding and upgrade mat farming.