Btw you can also have 2hander Shadow Strike Infiltrator: https://www.grimtools.com/calc/qNYoLxlV
And Shadow Strike builds can (and usually do) have more active skills. This one has WoR + PB + Shadow Strike + Amatok + ABB + RoS + some item skill which is 7 in total. Maybe sometime Storm Box / Inquisitor Seal
The 3 active skills variants are just specially made to have fewer buttons.
It’s from this topic: [1.1.6.2] Endless Winter. Bane of the Winter King family: SS Infiltrator, CT Spellbreaker, pseudo-pets Trickster, PS Trickster, BA Blademaster