I'm a DM running Storm King's Thunder, and it's likely the party will soon get the Shard of the Ise Rune item (p. 236-237). I'm reading through the description, and while I understand most of it, I'm confused about how exactly the "Gift of Frost" property works and what it does.
Gift of Frost. You can transfer the shard's magic to a nonmagical item—a cloak or a pair of boots—by tracing the ise rune there with your finger. The transfer takes 8 hours of work that requires the items to be within 5 feet of each other. At the end, the shard is destroyed, and the rune appears in blue on the chosen form, which gains a benefit based on its form:
Question #1: What does one need to do during these 8 hours of work? It is saying that you need to stand there for 8 hours straight while tracing the rune the whole time? Or is it just saying that you start the process by tracing the rune, and then all needs to happen is that the items need to remain within 5 feet of each other for the next 8 hours for the process to complete its work?
Question #2: Once the transfer is complete, does the cloak or pair of boots have all the other abilities of the original Shard, or does it only have the couple abilities listed for the specific item after the Gift of Frost description?
This confuses me because it says that you "transfer the shard's magic", which makes me think that it means the item has all the Shard's abilities. However, the description of what happens to the Cloak says that it gives the wearer resistance to fire damage but it seems that it would already have that from the "Frost Friend" ability of the rune. It also is odd that the Shard is "very rare" while the clothing that you can transfer its magic into is only "rare".
On the other hand, if it doesn't give all the shard's abilities to the new clothing, why would you want to use the Gift of Frost ability at all? It seems like you'd be giving up an awful lot of useful abilities, changing from an item that's worth "very rare" to one that's only worth "rare".
So I am just very confused about how this item works at all, as it's the first rune-based item in the campaign that we're likely to run into. I feel like I must be misunderstanding it entirely.