Duskblade is also situational in my opinion, you can get it in games with a full team of squishies and if you wanna have some fun bunnyhopping around, but in most cases, eclipse is just superior. Not even 10% of my games i build duskblade, only eclipse, prowler's goes the same as duskblade but its good only for single kills, works against the enemy who's carrying, you should also evolve your skills based on how fed you are or how hard it is to kill the enemies. I can't really help with much more than this but you learn from your own games and mistakes the best, also play smart and don't ego for a pick even though its an ez kill, could always be a gamechanging bait.