advice on petioner / cleric build

[malcon]

ive got a build im working on and would welcome any advice

so far its

{table=head]Level|Class|Base Attack Bonus|Fort Save|Ref Save|Will Save|Skills|Feats|Class Features

1st|Appentice 1|
+0|
+0|
+0|
+0|Skills| Spell Focus (evocation), Bartek’s School Graduate (College of Magic)|Areas of apprenticeship(Arcanist, Divine Channel), split training(Petitioner, cleric)

2nd|Petitioner 1|
+0|
+0|
+0|
+2|Skills| Spell Focus (conjuration)|Arcane School(divination), Bonus Summoning Feat, Spontaneous Summoning, Cantrips Wizard(petitioner), Hybrid (select bard at 7th) 101 arch types

3rd| Petitioner 2|
+1|
+0|
+0|
+3|Skills|Artillery Mage |New Class Abilities

4th|Cleric 1|
+1|
+2|
+0|
+5|Skills|New Feats| Aura, channel energy 1d6, domains, orisons

5th| Cleric 2|
+2|
+3|
+0|
+6|Skills|New Feats|New Class Abilities

6th| Petitioner 3|
+2|
+4|
+1|
+6|Skills|New Feats|New Class Abilities

7th| Petitioner 4|
+3|
+4|
+1|
+7|Skills|Bartek’s Post Graduate (College of Magic)| Bonus Summoning Feat

8th|Bard 1|
+3|
+4|
+3|
+9|Skills|New Feats| Bardic knowledge, bardic performance, cantrips, countersong, distraction, fascinate, inspire courage +1

9th| Bard 2|
+4|
+4|
+4|
+10|Skills|New Feats| Versatile performance, well-versed

10th|Bard 3|
+5|
+5|
+4|
+10|Skills|New Feats|Inspire competence +2

11th| Bard 4|
+6/+1 |
+5|
+5|
+11|Skills|New Feats|New Class Abilities

12th| Bard 5|
+6/+1 |
+5|
+5|
+11|Skills|New Feats| inspire courage +2, lore master 1/day

13th| Bard 6|
+7/+2 |
+6|
+6|
+12|Skills|New Feats| Suggestion, Versatile performance

14th| Bard 7|
+8/+3 |
+6|
+6|
+12|Skills|New Feats| Inspire competence +3

15th| Bard 8|
+9/+4 |
+6|
+7|
+13|Skills|New Feats| Dirge of doom

16th| Bard 9|
+9/+4 |
+7|
+7|
+13|Skills|New Feats| Inspire greatness

17th| Bard 10|
+10/+5 |
+7|
+8|
+14|Skills|New Feats|Jack-of-all-trades, Versatile performance

18th| Bard 11|
+ +11/+6/+1 |
+7|
+8|
+14|Skills|New Feats| Inspire competence +4, inspire courage +3, lore master 2/day

19th| Bard 12|
+12/+7/+2 |
+8|
+9|
+15|Skills|New Feats| Soothing performance

20th| Bard 13|
+12/+7/+2 |
+8|
+9|
+15|Skills|New Feats|New Class Abilities[/table]

[malcon]

the main thing I've been trying with this build is to increase versatility.
pet gives spontaneous summons cleric is mainly there for extra spells, and bard is there to bring pet spell casting up and provide support for summons artillery mage is just a little icing on the cake with spontaneous Magic Missile that will better scale with the build