DnD Magic Item Conversions: Antennae and Anvils

Antennae of Triangulation

Wondrous Item, Very Rare (requires attunement)

Aura: Strong Divination

This magic item appears to be antennae removed from some gargantuan insect. Usually over 8 feet in width and 20 or more feet in length, they must be mounted somewhere on a vessel that has a spelljamming helm installed. The antennae include a helmet that you wear in order to receive information from the antennae.

While wearing the helmet, you have a complete picture of the space around your vessel. You automatically detect any creature or object that is huge sized or larger within a 1-mile-radius sphere centered on the antennae and can see and hear through any point within that area as if you were there.

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High Anvil of the Dwarves

Wondrous Item, Legendary (requires attunement by a dwarf)

Aura: Strong Transmutation

This large and elaborately carved anvil is forged from an alloy of adamantite and steel and adorned with depictions of great events from dwarven history. It was crafted by the dwarves to help create some of their greatest works. Most dwarven communities that manage to obtain one of these anvils regard it among their most prized treasures and guard it accordingly. 

Even without attuning to the anvil, any smith using the anvil to craft finds their skills greatly increased. When used to craft items, both magical and nonmagical, it takes you a quarter of the normal time, and it costs you half as much of the usual gold.

If you are attuned to the anvil, weapons and armor you craft are sometimes imbued with magical abilities, which are only apparent after your work is completed. When you finish crafting a nonmagical weapon or suit of armor using the anvil, roll a d8 and consult the following table to see the result:

1 - No additional effect

2 - No additional effect

3 - Weapon: it becomes a magic weapon with a +1 bonus to attack and damage rolls. Armor: You gain a +1 bonus to AC.

4 - Weapon: whenever you hit with this weapon, it deals an additional 1d4 fire damage. Armor: Whenever you take fire damage, that damage is reduced by 1d4.

5 - Weapon: whenever you hit with this weapon, it deals an additional 1d4 cold damage. Armor: Whenever you take cold damage, that damage is reduced by 1d4.

6 - Weapon: whenever you hit with this weapon, it deals an additional 1d4 lightning damage. Armor: Whenever you take lightning damage, that damage is reduced by 1d4.

7 - Weapon: whenever you hit with this weapon, it deals an additional 1d4 thunder damage. Armor: Whenever you take thunder damage, that damage is reduced by 1d4.

8 - Weapon: whenever you hit with this weapon, it deals an additional 1d4 radiant damage. Armor: Whenever you take radiant damage, that damage is reduced by 1d4.

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Iron Anvil of the Armies

Wondrous Item, Rare

Aura: Moderate Transmutation

This is a large, black, iron anvil embossed with runes of power in gold and brass. A smith can complete tasks with uncanny quickness. When used to craft nonmagical items, it takes you a quarter of the normal time, and it costs you half as much of the usual gold.

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Anvil of the Lortmil Mountains

Wondrous Item, Rare (requires attunement)

Aura: Moderate Transmutation

This anvil was enchanted in a shrine of Moradin. While attuned to it, you can craft weapons and armor of exceptional quality. When you use this anvil to craft nonmagical weapons and armor, it takes you twice the normal time. When you finish crafting one of these items, make an ability check using your smith’s tools (DC 20). If you succeed, the weapon or armor is imbued with magic and becomes a +1 version of that weapon or armor.

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Here are some more magic items converted from the Dungeons and Dragons 2e Encyclopedia Magica into 5e and published on the DMsGuild under Artifacts of Antiquity Volume 2. The first of these is made to accompany a Spelljammer campaign, perhaps alongside one of my favorite items: the Accelerator. Most of these aren't intended as the sort of items you have stuck in your backpack to carry around for daily use. Then again, perhaps if you were particularly determined to get the most out of your downtime you could get a miniature smithy set up in a portable hole, fully decked out with magic anvil and ready to go at a moment's notice.