It'd be tough to do an INT/WIS build here, and to fit in all the feats you need to do decent ranged damage and competent healing. So instead of going 15/5, I tossed together a 13/6/1 with the 1 being Arti to get some of those feats for free, plus Conjure Bolts and a lever-pulling pet if you need to run things solo. It's mainly INT-based for Repeater damage. DC casting is a casualty, but it should still heal and throw no-save spells (and Heroic blade barriers) just fine. You also lose Mass Death Ward, but the single-target variety should do fine. MCCW can be overkill, and you still have masses up to Serious, as well as access to Heal.
UMD is maxed to throw things like Greater Heroism and Reconstruct scrolls (if you get WF/BF in the group, it comes in handy.) All the roguish skills are also maxed, including Open Lock which helps in some Epics.
Code:
Repeater Cleric
13/6/1 Cleric/Rogue/Artificer
True Neutral Human
Level Order
1. Rogue 6. Rogue 11. Rogue 16. Rogue
2. Artificer 7. Cleric 12. Cleric 17. Cleric
3. Cleric 8. Cleric 13. Cleric 18. Cleric
4. Cleric 9. Cleric 14. Cleric 19. Rogue
5. Cleric 10. Cleric 15. Cleric 20. Rogue
Stats
36pt Tome Level Up
---- ---- --------
Strength 8 +6 4: INT
Dexterity 16 +6 8: INT
Constitution 14 +6 12: INT
Intelligence 18 +6 16: INT
Wisdom 12 +6 20: INT
Charisma 8 +6 24: INT
28: INT
Skills
R A C C C R C C C C R C C C C R C C R R
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
------------------------------------------------------------
Concent 2 3 1 1 1 2 1 1 1 2 1 1 1 2 1 1 1 23
Heal 2 4 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 23
Spellcr 2 3 2 2 1 1 1 2 2 1 2 1 2 1 23
Disable 4 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 23
Open Lo 4 3 5 7 1 2 1 23
Search 4 1 1 2 1 1 1 1 2 1 1 1 1 1 1 1 1 1 23
Spot 4 1 4 5 5 3 1 23
UMD 4 5 1 1 1 2 1 1 2 1 1 1 1 1 23
Balance 4 1 7 12
Diplo 4 1 5
Bluff 4 4
Jump 4 4
Swim 3 3
Tumble 1 1
------------------------------------------------------------
52 9 7 8 8 14 8 9 9 9 15 10 10 10 10 17 11 11 17 18
Feats
1 : Point Blank Shot
1 Human : Rapid Shot
3 : Empower Healing Spell
3 Deity : Follower of: Sovereign Host
6 : Precision
9 : Precise Shot
9 Deity : Unyielding Sovereignty
12 : Improved Critical: Ranged
15 : Maximize Spell
18 : Improved Precise Shot
21 Epic : Combat Archery
24 Epic : Overwhelming Critical
26 Destiny: Epic Spell Power: Positive OR Holy Strike
27 Epic : Blinding Speed
28 Destiny: Doubleshot
29 Destiny: Elusive Target
30 Epic : Epic Damage Reduction
30 Legend : Scion of: Celestia
For enhancements, Tier 5 in Mechanic, enough in Harper to get INT to hit and KTA, just enough in Assassin for Assassin's Trick, rest in Radiant Servant to bolster your healing some (in Reaper, Burst and Aura do next to nothing for you personally, and being at range, they do little for the party.)