Trap Support

Trap Support is a support gem. When this gem is linked to a skill gem, it alters the skill so that instead of the player casting the skill directly, the player lays a trap. The trap is invisible to enemies, and the first enemy to enter the trap's trigger radius sets off the trap. That enemy is targeted by the linked skill, and the trap is destroyed.

Skill functions and interactions
Traps and Totems: When Trap is linked in combination with the and  or  gems, the result is a skill that lays a mine. When the mine is detonated, it lays a trap. When the trap is sprung, it casts a totem, which then can cast the linked skill. Players cannot create traps that lay mines, or totems that lay mines or traps.

Attack Skills:Trap will affect a linked attack skill if that skill is ranged. Attacks such as and, which normally operate with ranged or melee weapons, will only be affected by trap if the player has a ranged weapon equipped.

Cooldown: The gem overrides the cooldown on supported skills with the trap cooldown. For example when the support gem is combined with it can be used multiple times in a row, as long as there are trap charges remaining.

Spell Echo: A spell supported by Trap Support cannot also be supported by. The gem combination will not result in a spell trap that repeats its cast.

Version history

 * Trap Throwing Speed now scales up to 19% at gem level 20 (from 10%).
 * Supported skills now deal increased Trap Damage as the gem levels up, up to 38% increased Trap Damage at gem level 20 (previously no bonus).


 * No longer grants supported skills more trap damage.
 * No longer has a cooldown.
 * Now has a mana multiplier of 110% (down from 140%).
 * Now grants supported skills increased trap throwing speed, up to 10% at gem level 20.


 * Base duration lowered to 4 seconds (from 16).Trap will now trigger at the end of its duration.


 * Trap Support now deals 20% more Trap Damage at gem level 1, rather than more Trap damage to hits, up to 39% more Trap Damage at gem level 20.


 * Trap's damage modifier no longer affects damage over time.


 * All trap and mine skills have had their trap and mine duration reduced to 16 seconds. This includes the support gems Trap and Remote Mine.


 * The Trap and Mine support gems now have multiplicative damage bonuses that are specific to traps and mines respectively. This means that you can't cast a skill through a trap and a mine for double bonuses. In addition, Trap and Mine damage bonuses now do not benefit minions cast through traps or mines.


 * Damage increase has been reduced at all levels by a flat 5%.


 * Quality on the Trap support gem now offers faster trap throwing instead of trap duration.


 * Reduced Cooldown has been replaced with increased Damage.
 * The Trap support gem now has a fixed cooldown time of 4 seconds.


 * Now starts with a 12 second cooldown, but this decreases as it levels up.


 * Trap has been added to the game.
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