I would keep a wand swapout like recomp or evocation for the pierce through enemies as the other 2 don’t do that. Crystal wand is like borderline useless when you have fallen wand alien reskin but the firerate helps but in most cases when you would think about swapping to cwand for the fire rate to kill enemies you would have benefited more from just lining them up and using recomp/evocation. Pretty much same thing xRyuzaki said
imo the class that really gets the most value out of entropy is samurai as it benefits from the def buff more than knight and paladin and the mana buff is better on samurai than warrior (this depends on your mheal) but it is still insanely good on anything and kinda just comes down to what you enjoy playing. And Samurai doesnt lose out on those bonus stats that a robe/leather class would have if you weren’t using entropy so it really has no negatives besides when you would want to swap to Celestial blade if you had it for the dps
The timer I have no clue though It is hard to notice tbh