There is one more important floor I have to visit. I don't care for the other floors.
On the way, though, we do encounter some other new floors, starting with a Floor of Remembrance based on the Antlion's Den. It holds nothing but an Elixir.
We also find another Ribbon on one floor.
Luckily, on this, my third full run of the Ruins, the floor I want is spawned. It's near the end of the dungeon. The enemies here wander about the screen and are all puppets. Including one that the game seems to consider a boss, the Death Puppet. It hits hard, but it's no problem at this point.
Once we clear out all the puppets (I think it's ten battles), a chest appears. It contains the Nirvana, Porom's best weapon that can cast Reflect when used as an item.
If there are any floors I've missed, I don't care, we've got all of the equipment from that dungeon.
However, there's still one thing left to defeat before FFIV is over... the Brachioraidos.
Stats:
Kain: Lv 89 HP:7576 MP:0 Strength:99 Speed:67 Stamina:86 Intellect:17 Spirit:56 Attack:255 (17 attacks) Defence:106 Magic Defence:35
Rydia: Lv 81 HP:4021 MP:764 Strength:36 Speed:32 Stamina:37 Intellect:99 Spirit:66 Attack:129 (7 attacks) Defence:67 Magic Defence:45
Cecil: Lv 89 HP:8092 MP:458 Strength:99 Speed:65 Stamina:99 Intellect:43 Spirit:69 Attack:255 (17 attacks) Defence:110 Magic Defence:33
Rosa: Lv 85 HP:5724 MP:713 Strength:53 Speed:42 Stamina:49 Intellect:28 Spirit:99 Attack:143 (9 attacks) Defence:74 Magic Defence:52
Edge: Lv 89 HP:6262 MP:316 Strength:84 Speed:81 Stamina:62 Intellect:44 Spirit:35 Attack:255 (16 Attacks) Defence:85 Magic Defence:34