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Expanding Codex: Fulminar

Alternate Traits and Actions The following changes allow GMs to alter a fulminar without modifying its challenge rating: Forked Lightning. When the fulminar flies at least 10 feet, it creates a duplicate lightning form that potentially fools attackers. Until the beginning of its next turn, after it moves, attack rolls against it have disadvantage. If it is hit by an attack, this trait is disrupted until it moves again. The fulminar loses its...

Expanding Codex: Iron Sphere

The following changes allow GMs to alter an iron sphere without modifying its challenge rating: Acid Jet (Recharge 5–6). The iron sphere extends a nozzle from an open panel and shoots a stream of acid in a 20-foot line that is 5 feet wide. Each creature in that line must make a DC 15 Dexterity saving throw, taking 22 (4d10) acid damage on a failed save… or half as much damage on a successful one. The iron sphere loses its Lightning Cannon...

Expanding Codex: Pact Drake

Alternate Traits and Actions The following changes allow GMs to alter a pact drake without modifying its challenge rating: Appoint Notary. As an action, the pact drake designates a willing creature to witness a pact or agreement on the drake’s behalf. The designated creature gains the drake’s Binding Witness trait and Punish Transgressor action for the pact or agreement it witnesses. It also gains the ability to cast scrying three times per...

Expanding Codex: Unhatched

Alternate Traits and Actions The following changes allow GMs to alter an unhatched without modifying its challenge rating. Draconic Hatred. The unhatched harbors intense hatred for the draconic parent(s) that left it unprotected. The unhatched has advantage on attacks against dragons and creatures with a draconic heritage. The unhatched loses its Hatred trait. Draconic Magic Resistance. As a bonus action, the unhatched gives itself advantage on...

Expanding Codex: Bookkeeper

Alternate Traits and Actions The following changes allow GMs to alter a bookkeeper without modifying its challenge rating. Creator’s Mark. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: the bookkeeper marks the target with an invisible rune, which it and its creator can see. The mark can be removed with a dispel magic or similar magic. The bookkeeper loses its Bite action. Dual Binding. The bookkeeper is attuned to two books...

Expanding Codex: Void Giant

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter a void giant without modifying its challenge rating. Deep Void Casting (Recharge 4–6). As a bonus action, the void giant can infuse a spell with powerful void magic. One creature that...

Expanding Codex: Swolbold

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter a swolbold without modifying its challenge rating: Audience-Driven Overconfidence. The swolbold has advantage on attack rolls against a creature if at least one of the swolbold’s...

Expanding Codex: Venom Elemental

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter a venom elemental without modifying its challenge rating: Air Form. Aerosolized versions of the venom elemental are rarer than their liquid cousins on the demiplane of poisons. The...

Expanding Codex: Albino Death Weasel

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter an albino death weasel without modifying its challenge rating: Albino Camouflage. The albino death weasel is naturally camouflaged in areas with white backgrounds, such as...

Expanding Codex: Arcanaphage

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter an arcanaphage without modifying its challenge rating. Diviniphage. A diviniphage feeds solely on divine magic but still interacts with all types of magic. It is immune to damage from...

Expanding Codex: Ziphius

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter a ziphius without modifying its challenge rating: Capsize. If the ziphius moves at least 20 feet straight toward a seagoing vessel and then hits and damages it with a dorsal fin...

Expanding Codex: Leonino

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter a leonino without modifying its challenge rating: Favored Messenger. While the leonino is delivering a message, it has advantage on saving throws against spells and other magical...

Expanding Codex: Moon Drake

The Expanding Codex series fleshes out monsters from the Creature Codex, giving GMs ways to modify the existing monsters to surprise well-prepared players or to introduce monsters to a campaign. Alternate Traits and Actions The following changes allow GMs to alter moon drakes without modifying its challenge rating: Shiftersense. The moon drake can sense the presence of shapeshifters within 30 feet. The moon drake’s darkvision is reduced to 60...


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