Explosive Trap

Explosive TrapTrap, Spell, AoE, Fire, Physical
Level: (1-20)
Cost: (6-20) Mana
Cast Time: 1.00 sec
Critical Strike Chance: 6.00%Throws a trap that creates an explosion when triggered, dealing spell damage in an area around it. A number of smaller explosions occur within a secondary area around the trap in quick succession after the first.Deals (4-437) to (6-655) Physical Damage
Trap lasts 4 seconds
50% of Physical Damage Converted to Fire Damage
Base explosion radius is (1.2-1.8) metres
Base secondary radius is (1.2-1.8) metres
Base smaller explosion radius is (0.7-1.3) metres
Causes (3-7) smaller explosions
Smaller explosions have between 30% reduced and 30% increased base radius at random

Additional Effects From 1-20% Quality:
Causes +(0.1-2) smaller explosionsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop level: 5Vendor Offer
1x Scroll FragmentMetadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemShrapnelTrap

Explosive Trap is a spell that throws a trap that creates multiple explosions when triggered. It deals physical damage that's converted to fire damage.

Skill functions and interactions

The base radius of the large explosion is 1.2m, and the base radius of the small explosions is 0.7m, with the default size having a radius of 1.0m. Both of these radii are increased by the +x metres to radius gained from gem levels and by modifiers to Area of Effect. The chance that a small explosion will hit a targeted enemy can be calculated as $\color [rgb]{0.6392156862745098,0.5529411764705883,0.42745098039215684}(r_{small}+r_{enemy}-0.1m)^{2}/(r_{large})^{2}$. Increases to radius improve the overlap chance of small explosions on the targeted enemy by increasing the ratio of the small radius to the large radius, while increased area of effect may either increase or decrease the overlap chance, as different breakpoints in the calculation of the large and small radius are reached.

Gem level progression

Level				Mana Cost	Physical Damage	# Explosions	Radius (Base)	Radius (Secondary)	Radius (Smaller)	Exp.	Total Exp.
1	1	0	0	6	4 to 6	3	1.2m	1.2m	0.7m	0	0
2	2	0	0	6	5 to 7	3	1.2m	1.2m	0.7m	70	70
3	4	0	0	7	7 to 10	3	1.3m	1.3m	0.8m	308	378
4	7	14	0	8	10 to 15	3	1.3m	1.3m	0.8m	1554	1932
5	11	19	0	9	14 to 22	4	1.3m	1.3m	0.8m	6667	8599
6	16	26	18	10	21 to 32	4	1.4m	1.4m	0.9m	26047	34646
7	20	31	22	11	28 to 43	4	1.4m	1.4m	0.9m	49725	84371
8	24	37	25	12	37 to 55	4	1.4m	1.4m	0.9m	95714	180085
9	28	42	29	13	48 to 71	5	1.5m	1.5m	N/A	169595	349680
10	32	47	33	14	61 to 91	5	1.5m	1.5m	N/A	283759	633439
11	36	52	36	14	76 to 114	5	1.5m	1.5m	N/A	453996	1087435
12	40	58	40	15	95 to 143	5	1.6m	1.6m	1.1m	703128	1790563
13	44	63	44	16	119 to 178	6	1.6m	1.6m	1.1m	1061223	2851786
14	48	68	48	16	146 to 220	6	1.6m	1.6m	1.1m	2065870	4917656
15	52	74	51	17	180 to 270	6	1.7m	1.7m	1.2m	2507110	7424766
16	56	79	55	18	221 to 331	6	1.7m	1.7m	1.2m	5798936	13223702
17	60	84	59	18	269 to 404	7	1.7m	1.7m	1.2m	15083919	28307621
18	64	90	62	19	327 to 491	7	1.8m	1.8m	1.3m	27792735	56100356
19	67	94	65	19	378 to 567	7	1.8m	1.8m	1.3m	43869739	99970095
20	70	98	68	20	437 to 655	7	1.8m	1.8m	1.3m	242081556	342051651
21	72	100	70	20	480 to 720	8	1.9m	1.9m	1.4m	N/A	N/A
22	74	N/A	N/A	21	527 to 791	8	1.9m	1.9m	1.4m	N/A	N/A
23	76	N/A	N/A	21	579 to 869	8	1.9m	1.9m	1.4m	N/A	N/A
24	78	N/A	N/A	21	635 to 953	8	2m	2m	1.5m	N/A	N/A
25	80	N/A	N/A	22	697 to 1046	8	2m	2m	1.5m	N/A	N/A
26	82	N/A	N/A	23	764 to 1146	9	2m	2m	1.5m	N/A	N/A
27	84	N/A	N/A	23	837 to 1256	9	2.1m	2.1m	1.6m	N/A	N/A
28	86	N/A	N/A	23	917 to 1376	9	2.1m	2.1m	1.6m	N/A	N/A
29	88	N/A	N/A	24	1004 to 1506	9	2.1m	2.1m	1.6m	N/A	N/A
30	90	N/A	N/A	24	1099 to 1649	9	2.2m	2.2m	1.7m	N/A	N/A
31	91	N/A	N/A	25	1150 to 1724	9	2.2m	2.2m	1.7m	N/A	N/A
32	92	N/A	N/A	25	1202 to 1804	10	2.2m	2.2m	1.7m	N/A	N/A
33	93	N/A	N/A	25	1257 to 1886	10	2.2m	2.2m	1.7m	N/A	N/A
34	94	N/A	N/A	26	1315 to 1972	10	2.2m	2.2m	1.7m	N/A	N/A
35	95	N/A	N/A	27	1375 to 2062	10	2.3m	2.3m	1.8m	N/A	N/A
36	96	N/A	N/A	27	1437 to 2156	10	2.3m	2.3m	1.8m	N/A	N/A
37	97	N/A	N/A	27	1503 to 2254	10	2.3m	2.3m	1.8m	N/A	N/A
38	98	N/A	N/A	28	1571 to 2356	10	2.3m	2.3m	1.8m	N/A	N/A
39	99	N/A	N/A	28	1642 to 2462	10	2.3m	2.3m	1.8m	N/A	N/A
40	100	N/A	N/A	29	1716 to 2574	10	2.3m	2.3m	1.8m	N/A	N/A

Item acquisition

Explosive Trap can drop anywhere.

Recipes

Explosive Trap can be created from the following recipes:

Amount	Part	Description	Meta
7	Deathly DesignsDeathly Designs7Level 21 Trap Gem Quality: +23% Corrupted"The Karui was correct; there is virtue in honouring my ancestors."	Random corrupted level 21 Trap gem with 23% quality	A
13	The CataclysmThe Cataclysm13Level 21 Spell Gem CorruptedThe mighty warriors traded in blows, the nimble archers in arrows, yet it was the brazen thaumaturgists who would bring catastrophe to all.	Random corrupted level 21 Spell gem	A
6	The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb	Random level 20 gem	A
3	Gemcutter's PromiseGemcutter's Promise3Gem Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter	Random gem with 20% quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	Random gem with 1–20% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Quest reward

This item is given as a quest reward for the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Enemy at the Gate Act 1	✗	✓	✗	✗	✗	✗	✗

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Enemy at the Gate Act 1 Nessa	✓	✓	✓	✗	✗	✗	✓
A Fixture of Fate Act 3 Siosa	✓
Fallen from Grace Act 6 Lilly Roth	✓

Related helmet enchantments

The following helmet enchantments affect Explosive Trap.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Shrapnel Trap Damage 1	66	Merciless Labyrinth	Explosive Trap deals 25% increased Damage	helmet 100
Enchantment Shrapnel Trap Damage 2	75	Eternal Labyrinth	Explosive Trap deals 40% increased Damage	helmet 100
Enchantment Shrapnel Trap Radius 1	66	Merciless Labyrinth	Explosive Trap has 16% increased Area of Effect	helmet 100
Enchantment Shrapnel Trap Radius 2	75	Eternal Labyrinth	Explosive Trap has 24% increased Area of Effect	helmet 100
Enchantment Shrapnel Trap Secondary Explosions 1	66	Merciless Labyrinth	Explosive Trap causes an additional smaller explosion	helmet 100
Enchantment Shrapnel Trap Secondary Explosions 2	75	Eternal Labyrinth	Explosive Trap causes 2 additional smaller explosions	helmet 100

Version history

Version	Changes
3.23.0	Quality now causes +0-2 smaller explosions, instead of providing 0-10% increased Area of Effect.
3.21.0	Explosive Trap now causes 3 smaller explosions at gem level 1 (previously 4), scaling up to 7 at gem level 20 (unchanged).
3.17.0	Explosive Trap now deals 437 to 655 Physical Damage at gem level 20 (previously 309 to 464). Now has 100% Effectiveness of Added Damage at all gem levels (previously 60%).
3.6.0	Modifiers to Explosive Trap's radius now also affect the spread of its explosions. Now deals 4 to 6 Physical damage at gem level 1 (from 4 to 7) and 280 to 420 Physical damage at gem level 20 (from 303 to 455) Now gains radius as the gem levels, up to +4 radius at gem level 20. Now has an added damage effectiveness of 60% (from 50%).
3.4.0	Base damage increased by 40% at gem levels 4 and up. At gem levels 1 to 4, the damage has been increased, slightly more at each level up to level 4.
3.3.0	Explosive Trap has been added to the game.