An item crafted as a fusion of both magic and technology, the Arcane Grenade is a very rare find. An eldritch device wrought from enchanted metal and etched with intricate runes, the Arcane Grenade is a powerful tool for spellcasters seeking delayed devastation. Similar in function to a Glyph of Warding spell, this magical device can store a single spell, holding its power in stasis until the grenade is discharged. When activated, the stored spell is unleashed at its original potency.
- The grenade has 10 charges, each representing 1 level of spellcasting (cantrips count as 1). Charges are spent as part of the casting of the spell, which consumes a number of charges equal to the spell's level when cast.
A spell stored in the device can be held for up to 8 hours. After that time, the stored magic dissipates. Any charges used in the storing of the spell are still spent.
When the final spell (all charges have been used) is either released or dissipates, the grenade fractures leaving only a mundane husk behind.
Spell Storing. You can store a prepared spell in the grenade by casting it into the device, each spell level of the casting counts as 1 charge (cantrips count as 1). The spell must target a single creature or an area. The spell being stored has no immediate effect when cast in this way.
When the glyph is triggered, the stored spell takes effect. If the spell has a target, it targets the creature that triggered the glyph. If the spell affects an area, the area is centered on that creature. If the spell summons Hostile creatures or creates harmful objects or traps, they appear as close as possible to the intruder and attack it. If the spell requires Concentration, it lasts until the end of its full duration.
Set the Trigger. You decide when throwing the grenade what type of trigger will unleash its payload. Choose from the following:
- Impact. The stored spell effect is instantaneous upon impact of being thrown.
- Delayed. The grenade may be either thrown or placed to be released at a small time delay. A duration of either 1 round, or 30 seconds, may be chosen. This duration is chosen when the item is thrown/armed.
By spending additional charges (DM discretion), you can refine the trigger so that only creatures of certain types activate it (for example, the glyph could be set to affect Aberrations). You can also set conditions for creatures that don’t trigger the glyph, such as those who say a certain password.
Notes: Crafted with immaculate precision and unusual materials, these devices are both expensive and time-consuming to fabricate. In general, these items are only made by obscure and eccentric artisans, take weeks of construction, and cost approximately 500 gold per unit., Utility, Consumable, Eldritch Machine
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