User blog comment:Dovahmasters/need a magic bow stronger the Magian crutch/@comment-25604735-20150520021413

The most powerful magic bow that can be purchased in Gransys before the end of the game is the Militant Dove. You can get it at the Black Cat. It is one of the DLC weapons.

A better bet is to pop over to Bitterblack Isle. Collect Level 2 cursed armors. Purify them while you and your main pawn are Striders, Rangers, or one of each. The weapon you will receive will either be one of several daggers or one of several bows. One of the possible bows is the Dragon's Tempest. This is the second most powerful magic bow and the most powerful permanently enchanted magic bow.

There is a stamina penalty if you use the bow before level 46. However, you level up quickly in BBI and will, most likely, have exceeded level 46 by the time you get the bow.

Although magic bows cannot be gifted, the unpurified level 2 weapons can be. If you'd like to pursue this course, I can give you handful of level 2s and you can try your luck purifying them.