Rimefire (5e Equipment)
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Weapon (longsword), legendary
Rimefire is a sentient, magic longsword with runes in Giant on either side. The red runes read, "My passion burns," and the blue read, "My rage runs cold." You can attune to her to gain the following benefits.
Aurora's Blessings. You gain rapport with this sword as you accomplish various tasks. These are divided into levels as follows:
One with fire. In order to achieve this level, you must attune with Rimefire: She becomes a +1 sword and may communicate with you, though only through carving runes into a block of ice with which she is embedded. The sword deals an additional 1d4 fire and cold damage.
Fire and Ice. In order to achieve this level, you must slay both a fire and frost giant: You gain counterspell, which may be cast any number of times a day, but only once per round of combat. If you have no spell modifier, use Rimefire's. This spell is always considered a 3rd level spell when cast, even if you could cast it at a higher level. If you are not wielding Rimefire, you lose access to the spell this way. at this level she may communicate simple messages to you, one or two words and an emotional sensation for context.
Royalty. In order to achieve this level, you must attain a crown and lands, and name yourself King/Queen: Rimefire deals an additional 1d4 radiant damage and the area in a 15' radius around the sword is illuminated as if were bright. This light appears as though it were from the aurora, and dimly lights the area surrounding the blade an additional 15'. when sheathed the light is extinguished. When you counter a spell using counterspell, the sword gains charges equal to the level of the countered spell. You may use these charges in one of three ways: donate them to a magic caster you can touch to replenish a spell slot equal to half the number of spent charges. Use them yourself in the same manner in place of expending a spell slot, or burn them to add an additional die of either cold, fire, or radiant damage you may only burn 3 charges this way. If you burn three charges, you could gain an additional die of each. The blade can hold up to 9 charges at a time. Every day at dawn, the number of charges is halved. at this level she may communicate with you fully as if speaking. her voice seems to originate from the polished gem in the hilt. this speech is telepathic in nature.