Thunder Beast Bow

Description
This elaborate bow is very light, you can hardly feel its weight. There is a small egg in the bow. If you look closely you can see lightning sparking in the egg.

Shocking Arrows
When you draw back this bow lightning arcs between your finger and the egg. This bow no longer needs ammunition. In addition when you make an attack with this bow, you may have it deal lightning damage instead of piercing.

Thunder Beast Kin
You have advantage on charisma checks against thunder birds, blue dragons, and bronze dragons. In addition you have advantage on saves against any abilities of these creatures that would deal only lighting or thunder damage.

Rituals
With items of legacy in order to unlock certain powers a character must meet certain prerequisites. First the player must be at a specific level to unlock an ability and secondly must have specific feats that require undergoing specific rituals to gain. You must have the Least Legacy (Thunder Beast Bow) feat to use the level 5-10 abilities, the Lesser Legacy (Thunder Beast Bow) feat to use the level 11-16 abilities, and the Greater Legacy (Thunder Beast Bow) feat to use the abilities above level 16. These rituals are required to unlock the feats and use this weapon's abilities)

Trial of Lightning(Least Legacy)
Prerequisite: You must complete the Trial of Lightning.

Cost: 300 gp;

Feat Granted: Least Legacy ( Thunder Beast Bow ).