This is a revisit of the warbow initially described in this question. Consideration was given to all answers, and combined/adapted for the below. Primarily, some of the spell storing abilities were removed, planar shift was limited, bonuses increased to keep the bow as a primary weapon consideration and not freely give all of the arcane archer abilities for free. As with the first question, I would like to determine if this is a logical progression, or if it is not enough in the beginning progressing to overpowered at the high end?
[Insert name here] was a distinguished ranger, well known for his willingness to protect those around him when the cause was just, regardless of the consequences to himself. Many of the tales that have grown around him have reached the status of unverifiable legend, but it is certain that his bow was a feared weapon among the unjust. It is rumored that he even ventured onto the Abyss and other planes to retrieve people stolen from their land.
Sometime after he retired, he returned to his woodland home to find his wife murdered, and son missing from their house. Taking up his bow once more, he ventured forth to rescue his son. It is unknown what actually happened, but his son was returned, and [...] and his bow were never seen again. Most believe that he either perished, or made a trade with an infernal being to exchange himself for his son.
Many people claim to have either seen or wielded his bow after that, but none of these have been confirmed, and few even believe that the bow existed, counting it as another fantastical tale that surrounds his legacy.
DESCRIPTION
[Insert name here] Warbow is dark wood intricately carved with arcane runes, and glows with a faint amber glow in dim light. A white leather grip is secured to the bow with two filigreed silver bands, one each at the top and bottom of the grip. To successfully utilize [...] Warbow to its fullest potential, a character must fulfill the following requirements:
Feats/Abilities Exotic Weapon Proficiency, Far Shot*, Planar favored terrain** (Edit for clarification: The planar terrain relates only to the planar shift aspect).
Skills Craft (bowyer) 4 ranks, Spellcraft 4 ranks
\begin{array}{c c l} \textbf{Character Level} & \textbf{Weapon Level} & \textbf{Weapon Effect} \\ \hline 1^\text{st}-2^\text{nd} & 1^\text{st} & \textit{“+0” adaptive war bow} \\ 3^\text{rd}-4^\text{th} & 2^\text{nd} & \textit{+1 adaptive war bow} \\ 5^\text{th}-6^\text{th} & 3^\text{rd} & \text{Enhance arrows} \\ 7^\text{th}-8^\text{th} & 4^\text{th} & \text{Minor displacement (as }\textit{blur}\text{)} \\ 9^\text{th}-10^\text{th} & 5^\text{th} & \text{Enhance arrows +3} \\ 11^\text{th}-12^\text{th} & 6^\text{th} & \text{Activation ring }\textit{spell storing} \\ 13^\text{th}-14^\text{th} & 7^\text{th} & \textit{Plane shift}\text{,** 3/day} \\ 15^\text{th}-16^\text{th} & 8^\text{th} & \text{Imbue arrow} \\ 17^\text{th}-18^\text{th} & 9^\text{th} & \text{Enhance arrows +5} \\ 19^\text{th}-20^\text{th} & 10^\text{th} & \text{Activation ring }\textit{spell storing, major} \\ \end{array}
1st Level: At first level, the bow gains the adaptive quality with no other bonuses.
3rd Level: +1 adaptive: At third level, the bow gains an additional +1 to hit/damage in addition to the existing adaptive quality.
5th Level: The bow gains the enhance arrows feature. Each non-magical arrow fired gains +1, and one of the flaming, shock or burst attributes.
7th Level: As a free action, the wielder of the bow can activate it, letting them act as though affected by a blur spell for a number of rounds equal to wielders level/2. This ability can be used a number of times per day equal to the wielder's character level.
9th Level: Enhance arrows now functions at a +3 bonus level, and gains one of the following elemental burst weapon qualities: flaming burst, icy burst, or shocking burst. This ability replaces the ability gained at 5th level.
11th Level: Activation of the first ring on the wrap occurs. This ring functions as a Ring of spell storing
13th Level: The leather wrap darkens and close inspection reveals swirls. The wielder of the bow gains the ability to use Plane Shift as a spell-like ability once a day with a caster level equal to the wielder's character level. **This can only be used to plane shift to a plane the wielder has selected as a favored terrain, if they have not selected a plane as a favored terrain, they cannot use this spell-like ability.
15th Level: The bow grants the ability to infuse any non-magical arrow with either a known or stored area of effect spell. This spell will activate on any hit. If the result of the attack is a miss, the spell is lost without activation.
17th Level: Enhance arrows now functions at a +5 level. In addition, each non magical arrow gains one of the following aligned weapon qualities: anarchic, axiomatic, holy, or unholy. The character cannot choose an ability that is the opposite of his alignment (for example, a lawful good character could not choose anarchic or unholy as his weapon quality).
19th Level: Activation of the second ring occurs. This functions as a Ring of spell storing, major.