Instructions
Go to the north of the town of Izumo until you see a six wooden pillars. Push pillars one space to the east. Use the Reveal spell to see the hidden entrance to the catacombs.
Go down the ladder to enter the catacombs. Use the Frost spell on the puddle directly below the entrance. Use the Sand spell on the sandy area in the center of the catacombs to reach the second puddle. Use the the Frost spell on it. This will turn both of the puddles into pillars.
Climb up the ladder on the right and jump across the four pillars to the left. Go through the open door to the north. Go north, then to the right down a hallway until you see a ladder.
Go down the ladder. Go right and up until you see a pillar blocking the way. Use Pound on the pillar to remove it, then use Sand to get past the next obstacle and continue going north. Go west until you see another pillar.
Use the Move spell to move the pillar one block to the east. Go back down, to the left and up the ladder you initially used to reach this area. Follow the path west, then north and finally east until you see the pillar that you moved earlier.
Jump across the pillar to the right, then go down the ladder. Go into the hole on the right to go down another ladder. Go south and use Pound on the pillar blocking the path.
Go west. Go up the ladder all the way to the left. Go north, then cast Parch on the small body of water in this area to dry it up. Go down the ladder and through the opening to the north. Go straight north and pick up the Ulysses tablet. You can now summon Ulysses in battle.