Darunia's Explosive Boulder (5e Spell)
You conjure a giant, rough sphere of solid rock about 3 feet in diameter and weighing about 2000 pounds. You can only cast this spell while standing on solid ground. The boulder appears in your space, but as part of the action used to cast this spell, you can throw or launch the boulder from your person to any point in range.
| 8th-level conjuration | |
| Casting time: | 1 action |
|---|---|
| Range: | 60 feet |
| Components: | V, S, M (a charred pebble) |
| Duration: | 1 round |
The launched boulder's path is a 5-foot-wide line originating from you, and is up to 60 feet in length. Any creature in the boulder's path must make a Strength saving throw. A Huge or larger creature has advantage on this saving throw, while a Small or smaller creature has disadvantage. On a failure, the creature takes 5d8 bludgeoning damage, is moved with the boulder until the boulder's momentum stops, and falls prone wherever the boulder stops. On a successful save, the creature takes half as much damage, stops the momentum of the boulder in its space, and is neither moved nor knocked prone.
At any point before the start of your next turn, you can use your reaction to cause the boulder to detonate with a fiery explosion. You can do this even with the launched boulder is in mid-trajectory, such as when a creature succeeded on its Strength save to stop the boulder. Each creature in a 30 foot radius of the boulder at that point must make a Dexterity save, taking 5d8 fire damage on a failure, or half as much on a success.
If the duration of this spell ends and the boulder hasn't exploded, it becomes a mundane boulder permanently.
At Higher Levels. When you cast this spell using a spell slot of 9th level, the bludgeoning damage and fire damage both increase by 1d8.
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