Arc Trapper Saboteur Merciless Lab (Path of Exile Harbinger League Journal #23) 08.09.2017 Angry Roleplayer On Merciless i finally transitioned to Arc Trap and it became really smooth. Arc chains really well and with high levelled gem the damage is decent. Liked it? Take a second to support Angry Roleplayer on Patreon!Spread the word!