(2) Set: Spike Trap deals 100% increased damage to enemies affected by Caltrops. Spike Trap now instantly refreshes charges on use, no longer costs resources, and each detonation restores 2 Discipline. (4) Set: Spike Trap explosions will blast affected enemies towards the nearest set Caltrops. Laying a Spike Trap grants 75% damage reduction. The duration of this bonus is always equal to the number of already laid traps in seconds. (6) Set: Spike Trap deals 10,000% increased damage, and each consecutive explosion from the detonated chain reaction will deal 25% more damage than the previous blast.