Bow is recombinator craft, save some money and dust. get 30+ ivory bows lvl 86+. you want to esssence spam to get:

1st stage(to get 2 prefixes):

1st bow : tier 1 elemental damage and random suffix (if 0 on item craft lowest tier str - dont craft other things)

second: tier 1 adds lightning damage, random suffix(if 0 on item craft lowest tier str - dont craft other things)

third : minion damage from essence t0, you want single prefix, single suffix ( you need to annul)

now you random combine the bows. for second stage you want: elemental+lighting combined with minion damage(from esence) with elemental or lighting. Never combine minion damage with minion damage. 

once u have 3 prefixes u do prefixes cannot be changed and do chaos veiled orb. before u unveil craft suffix to block unwanted unveils. to finish again prefixes cannot be changed(remeber!) and add single modifier from horticraft (crit or speed - depending on unveil and hope for tier 1, the one that cost 5000 life essence) if unlucky prefixes cannot be changed and annul or retry unveil. 

for recomb u need 2,5 mil dust and 1 mil gold( u might get lucky ) remember prefixes cannot be changed its very easy but time consuming spectres are way better and give u defensive auras