HCBailly plays Final Fantasy IV (Super Famicom) - Part 52 of 70

Secret of Mana isn't the only game with a death wall in it...but that's not even the worst thing that happens in this entry!

Sealed Cave Map (by FlyingArmor)

At the fourth basement floor, there is a hidden treasure in front of the left-hand rope leading downwards. By fighting off six Dream Evils (turn 'em into Toads!), you'll be able to access a rope that leads nowhere new.

At the fifth basement floor, you'll finally find the Crystal Room. You'll be able to take the Crystal, but as you leave the fifth floor, the wall will try to close in on you.

To beat the Demon Wall, have Edge throw the Hell Wind Shuriken as an item. Have Rydia summon Leviathan, have Kain use Jump and have Rosa Berserk Edge. If you don't beat the Demon Wall in time, all your party members will start dying one by one, but you should be able to beat this one.

Unfortunately, you'll have to leave the fifth basement floor to use Teleport or Warp. You'll only be able to warp back up to the first floor, and when you get back to the entrance, Golbez's presence shows up once again. Kain is brainwashed by Golbez once again and steals the last Crystal, then runs off while Golbez boasts about opening a way to the moon.