Copper Dragon

Lair Actions

Source: Monster Manual

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects:

• The dragon chooses a point on the ground that it can see within 120 feet of it. Stone spikes sprout from the ground in a 20-foot radius centered on that point. The effect is otherwise identical to the spike growth spell and lasts until the dragon uses this lair action again or until the dragon dies.
• The dragon chooses a 10-foot-square area on the ground that it can see within 120 feet of it. The ground in that area turns into 3-foot-deep mud. Each creature on the ground in that area when the mud appears must succeed on a DC 15 Dexterity saving throw or sink into the mud and become restrained. A creature can take an action to attempt a DC 15 Strength check, freeing itself or another creature within its reach and ending the restrained condition on a success. Moving 1 foot in the mud costs 2 feet of movement. On initiative count 20 on the next round, the mud hardens, and the Strength DC to work free increases to 20.

Additional Lair Actions

At your discretion, a legendary (adult or ancient) copper dragon can use one or both of the following additional lair actions while in its lair:

• Laughing Gas. The dragon chooses a point on the ground that it can see within 120 feet of it. A cloud of pink gas fills a 20-foot-radius sphere centered on that point. Each creature in that area that fails a DC 15 Wisdom saving throw is incapacitated with laughter until the end of its next turn.
• Torpid Energy. The dragon chooses a creature it can see within 120 feet of it. If the target fails a DC 15 Constitution saving throw, its speed is halved, and it can’t use reactions or bonus actions until the end of its next turn.

Regional Effects

Source: Monster Manual

The region containing a legendary copper dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:

• Magic carvings of the dragon’s smiling visage can be seen worked into stone terrain and objects within 6 miles of the dragon’s lair.
• Tiny beasts such as rodents and birds that are normally unable to speak gain the magical ability to speak and understand Draconic while within 1 mile of the dragon’s lair. These creatures speak well of the dragon, but can’t divulge its whereabouts.
• Intelligent creatures within 1 mile of the dragon’s lair are prone to fits of giggling. Even serious matters suddenly seem amusing.

If the dragon dies, the magic carvings fade over the course of dice:1d10|noform|noparens|avg (1d10) days. The other effects end immediately.

Additional Regional Effects

Either of these effects might appear in the area around a copper dragon’s lair, in addition to or instead of the effects described in the Monster Manual:

• Distant Melodies. The ethereal music of woodwinds and bells can be heard carried on the wind within 1 mile of the dragon’s lair.
• Starlit Stones. Standing stones are common on hilltops within 1 mile of the dragon’s lair. The stones shed dim light in a 10-foot radius at night. (If the dragon dies, the stones remain, but they no longer shed light.)