The Legend of Zelda: Oracle of Seasons/Subrosia
Now that you've recovered the first Essence of Nature, it's time to head back to Horon Village. Also, there are a few things that you may find with your new Seed Satchel.
 Maple the Witch
On the way back to Horon Village, you may encounter a strange witch. If you bump into her, you'll both spill items all over!
When the witch sees you, she addresses herself as Maple, apprentice of the great witch Syrup. She'll mention she needs Lon Lon Eggs, but you don't have any.
Maple is so miffed, she decides to take your things as well. Hurry and recover the spilled items, so you can get more than she does!
Maple will eventually appear after you slay 30 monsters, so keep your guard up. However, she does have some things of value, like rings. If you happen to obtain a certain one, Maple's Ring, she'll appear after you slay 15 monsters.
Maple also carries Magic Potions, which revive you when you run out of health. She often goes after these first. After all, they're very handy. However, Maple will immediately go after one thing if she drops it: a Piece of Heart. If you're lucky, you may snag one from her!
 Secret Sage Grotto
Near where Maple appears are two trees. Burn the one on the left with an Ember Seed to discover a secret grotto. A Sage is inside. Talk to him, and he gives you 100 Rupees!
Another Sage is in Horon Village. Go far to the southeast, and you'll find a house (Dr. Left's house) with three small trees. Burn the middle one to find him. You'll get 100 more Rupees!
There are several generous sages living in Holodrum who will give you Rupees if you find them. However, there are imposters out there, too, and they take Rupees!
 The Cuccodex
While you're in Horon Village, pay a visit to Dr. Left. He is having trouble reading because his torch isn't lit. Fortunatly, one Ember Seed will fix his problem. In gratitude, Dr. Left gives you a Cuccodex, a book on the different types of Cuccos. It will be important later.
While you're visiting Dr. left, bomb the cracked wall in his house. It will open up a path to a chest, but only in the winter. The chest has 20 Rupees inside.
 The Ember Seed Tree
West from Dr. Left's house is a mystical tree shaped like a flame. There are Ember Seeds growing from it. Remember this tree, because you can warp to it when you get another type of Mystical Seeds. Simply strike the tree with your sword to replenish on Ember Seeds and gain the power to warp there later on.
 Vasu's Ring Appraisals
Vasu will give you a L-1 Ring Box. He'll also give you an Unidentified Ring and teach you how ring identifying works. Once identified it turns into the Friendship Ring (#01). This time's free, but it costs 20 Rupees afterward. Most Rings will have some sort of power, but the power will only work if they are equipped after being identified. If by chance Vasu appraises a ring you already have, he'll let you sell it for 30 Rupees.
 A Piece of Heart
Southwest of Horon Village is a small path to the right. Take it, and you'll see a strange object near a tree. However, the tree is in the way, so you'll need to get rid of it. Equip your Seed Satchel and use an Ember Seed on the Tree. You'll burn it, and gain access to your first Piece of Heart.
Heart Pieces are rare and hard to get in Holodrum, some requiring special items or conditions to get. Whenever you obtain four Heart Pieces, you'll get another heart in your Health Meter.
 Mayor Ruul's Gasha Seed
Ruul, Mayor of Horon Village, lives in a house to northeast. If you talk to him, he'll talk all about Gasha Seeds and the nuts that grow from the trees they sprout.
In fact, he gives you a Gasha Seed so you can find out what he means. Outside his house is a patch of soft soil that you can plant the seed in. Later, you can come back and see if a tree has grown, and reap the rewards of the Gasha Nut. However, the tree disappears after you get the reward. You can do this whenever you get a Gasha Seed and find soft soil. It's usually just an unidentified ring inside the nut. If you're lucky, you may get a Piece of Heart! You can improve your chances of getting it and better rewards with the Gasha Ring equipped. Keep trying with Gasha trees, and this ring might become part of your collection.
 Finding Subrosia
After you've explored Horon Village, it will be time to start hunting the item the Maku Tree mentioned.
 Sokra the Prophet
When you are ready to leave Horon Village, head to the far southeast to find a path blocked by trees. However, a prophet named Sokra will wish to talk to you. He sees that the Season Spirits are calling for help, and that the Temple of Seasons is hidden somewhere. Sokra tells you to visit the spirits if you can find the temple for help, and then takes a nap. With that advice, take an Ember Seed and burn one of the trees to unblock the path to the southeast and leave Horon Village.
 Following Rosa
As soon as you leave the village, head north past the Octorocks, then northeast past the windmill, and east past the monsters.
A hooded girl will show up, Rosa, apparently panicking about a temple falling into a place called "Subrosia." She won't tell where it is, and runs off to return to it in secret. Of course, she just gave away how to get there: it's time to follow her!
Head in the direction Rosa went, and you'll find her. She's looking to see if she's being followed. Don't let her spot you, or she'll run! Instead, sneak around as she heads to Subrosia. When she gets close to her destination, she'll take a final peek to make sure she's alone.
Eventually, you'll reach a small field, where Rosa will... vanish? Swipe your sword over the grass, and you'll find a strange portal. Step into it...
The portal will warp you to the underworld of Subrosia, much more different than Holodrum. Its people are strange and hooded, and dwell in lava. You'll see that your Rupee counter has changed: instead of Rupees, Subrosians use Ore as currency. You'll need to find some to buy items here.
If you talk to the Subrosians, they'll be in an uproar about a temple landing in the east plaza. That sounds familiar...
The first place you want to go to is down a path southwest. Head down that path until you reach a set of stairs. Go down them.
 The Subrosian Dance Hall
You'll enter the Subrosian Dance Hall, where you can be rewarded for good dancing. Talk to the leader in red, and he'll let you dance.
Now, you'll play a mini-game where you must move with the other dancers in perfect coordination. Listen to the leader's instructions and then watch his movements.
If you can last through the mini-game without bumping into the other dancers, you'll get the Boomerang (L-1) for your dance skills. The Boomerang can hit faraway objects and stun certain enemies. If you keep on playing you will eventually be rewarded with the Strange Flute which will become Dimitri's Flute later.
 The Temple of Seasons
Now that you've got the Boomerang, head back to the location of the portal. This time, take the path on the far right. Go southeast, and you'll see the dancer who just won a boomerang himself. Keep going southeast, and you'll reach a small path, which will lead to a temple. Could it be...?
Your suspicions are realized as the four Season Spirits: Spring, Summer, Autumn, and Winter, greet you. This is indeed the Temple of Seasons. The Spirit of Winter tells you to get the Rod of Seasons and visit the spirits in the four corner towers.
With that, head straight forward to reach the central altar of the temple.
 The Rod of Seasons
You'll find the altar is much more inviting than harsh Subrosia. Head forward to find a pedestal. Stand on it, and the power of the Season Spirits will merge together and form the key item you need to restore Holodrum: theRod of Seasons. When it holds the power of the Season Spirts, it can change the seasons.
Now that you have the rod, the Spirit of Winter will mention to visit the towers again. Unfortunately, three of the towers can't be visited right now. Because of the damage it took, the Tower of Autumn is unreachable, the Tower of Summer is locked shut, and the Tower of Spring is sealed up, only accessible through a secret entrance. This leaves only the Tower of Winter, which is the only one you can visit. Head southeast to find it.
 The Tower of Winter
The first room of this tower is blocked by a path of lava. On the other side, there is a switch, but you can't reach it. Equip the Boomerang, and throw it at the switch to hit it. You can also use a bomb as an alternative.
Triggering the switch makes a bridge appear over the lava, which lets you cross it, and reach a staircase.
At the top is the altar of the Spirit of Winter, a blue fairy. She bestows the Rod of Seasons a wintry chill: the Power of Winter. With this power you can change the season to winter when you swing the Rod of Seasons atop a stump.
 Woods to the East
When you leave the Tower of Winter, you'll be contacted by the Maku Tree again. He sees the item you needed is the Rod of Seasons, and it has the power to open new roads. He has also dreamt of woods to the east. There might be an essence there...
For now, it's time to leave Subrosia. Go back to the portal, and you'll return to Holodrum.