"Who is that?"

The voice murmurs from the soil and wind around them, in the rustling of the leaves. The giant tree moves, heaving, cracking and snapping. In the shape of the flexing wood are brows and eyelids and a great mouth of bark. A face.

"Did I... doze off again?

"Ah. Well, well... it's you."

Squint.

"You've finally decided to return. Better late than never."

The tree sighs. Its wood creaks.

"After one hundred years, I'd nearly given up hope on seeing you again. Even my patience has limits, you know."

"That look on your face tells me that time has faded your memory, however. Some have called me the Deku Tree. I have watched over the trees and spirits of Hyrule for time immemorial. You came before me one hundred years ago, to draw that very sword... and some time after, your princess returned it to me, bereft of its wielder."

Link closes a hand around the sword, giving it a test tug.

A great laugh booms through the clearing.

"Were it that easy! To draw the sword that seals the darkness... I cannot say if you can do it, in this weakened state I see. Your long slumber has stolen much from you."

Link cocks his head. How? he's asking.

"I sense the Goddess' power in you. Walk the path you must, and perhaps it will take you where you need to be. The sword cannot be tricked from its sheath, if you lack the strength. It will reap the life from you sooner than you can outlast its test."

Link grasps the sword with both hands and heaves.

His arms tremble as they flex. He gasps, not out of effort, but of a tax on something deeper. The color of blood drains from his body. The sword gleams with strange intent—it is possible, it seems to whisper, the power is within you—and yet it refuses to budge. Something shatters—it's heard through the transmitter, the sound of breaking glass and a faint melodic tinkle—and the Deku Tree shouts, but Link's already releasing the sword.

"STOP!"

The tree's roar quakes through the earth, almost knocking Link off his feet. Its next words are more quiet and edged.

"That was dangerous."

Link's breathing shortly. "I have two more fairies."

"You understand not what you trifle with. The blessing spirits are not all you think they are. Not in this."

"I need more vitality."

"You must return when you are stronger."

"How far am I."

"I cannot say. If I had to guess, four decades to the century."

"...Is that four out of ten or six out of ten?"

A whisper of laughter.

"It is more than half."

Link is UNHAPPY.

"Do I need the sword to kill Ganon, or is it just useful?"

The tree lets out a rumble of contemplation, seeming to sag in thought. "That is a strange question."

It takes a minute for the Deku Tree to raise its voice again.

"It is one of a very small number of powers that can cut the threads of the Calamity for the sealing. Memory fades, but I believe that to be true. The Princess alone cannot do it, powerful as her blood is. Of the artifacts that can serve this purpose, many I do not know to still be in this world... and the rest, I know not to be. But I do not know everything, little one, bound here in age, and even this waning world may have new mysteries to birth. Thousands of years ago, your own people thought there might be a different answer...

"I cannot quite remember what came of that. Then again, Calamity Ganon walks the land again now, so that is an answer in itself."

Link looks down at the transmitter. "What are these artifacts?"

A throaty chuckle.

"You ask much of me. Legends so old they are forgotten...

"The power of the Fierce Deity has departed Hyrule, even if you can find that lost mask of his. The Bow of Light was said to be destroyed in a great battle tens of thousands of years past, but so was it said many times fore then. The Great Fairies of an older time told me of a great blade their kind pooled their power to bless once, one that could reflect virtue and vice of the soul alike, but which lost its power through the eons as their power dwindled. If it remains extant, it may no longer serve the purpose you wish. There are tales of the Six Sages, or the Seven Sages, depending on the telling, and a holy weapon they created... they created to seal... some sort of evil."

The Deku Tree grumbles.

"That is past where I must admit my knowledge passes from rumor to myth, I am afraid. There are yet more, surely, but I hardly remember that far back. This world is old, more than even I can imagine."

"Bow of Light" is at least a specific enough object he can try to conjure for it or its surroundings. Also the mask. He's not sure he can get the fairies' blade or the sages' weapon but maybe he can if he just mentally names them, uh, Fairyblade and Sagestabber?

Bow of Light: nope.

Fierce Deity Mask: A cracked and chipped thing which might have once been a painted ceramic mask. It's shaped like a face, but missing an ear and a cheek. It's buried in rocks and dirt. The missing bits are not conjurable. The mask practically crumbles to the touch.

Fairyblade: A large and very colorful sword, with a crystal green blade edged by purple and red. Surroundings are unconjurable. At any radius.

Sagestabber: nope.