I did not like the normal glaive that much, the kestrel is the better throwing weapon because it deals knock down when you throw it. It has the EXACT stats, same polaritys, everything. its the exact same stats as the normal glaive. Once you have it, 10 orikin cells later its yours and you equip it to realise. So basicly its T3, making it harder to get anyway but the rarity of the blades was madness. The main Blueprint is the same, Tower 3 void defence. The blades are void survival, i got them on T3, you can get them T2 if your really lucky. So after Update 11 its taken 4 weeks to get the blades from Survival Tower 3 survival.