(This are numbers from lvl 30 to make it more noticable but this happens in all levels)
“illusion master” gives 100% more damage to Samuro’s clones
Clones deal 36 damage and 54 when they crit, but after you pick “illusion master” clones deal 71 (normal, this is some rounding in the numbers), but crits deal 89 instead of 105 (crits doing 25% extra damage instead of 50%)
Now, when a clone procs “burning blade” (lvl 7 talent) it does 18 extra damage (at lvl 30), but after picking “illusion master” the damage goes to 54 instead of 36 (instead of +100% it is getting a +200% in damage)
if you combine this two things, damage is “normal” (clones’ crits deal 200% damage of normal damage, 100% normal basic damage, 25% crit, 75% burning blade) but if you pick “illusion master” without “burning blade” then you are not getting the full damage
(things that you discover in practice tool at 3:00 a.m, lol)