Here's a sneaky cloistered cleric /SCM / Malconvoker build I am going to attempt to run (for Age of Worms) 1-20. Right now it's a slow starter (especially since I took Dark Template at level 1 too... with LA buyoff eventually), but I have high hopes it'll be a fun build if I survive the early levels (read: get carried by our Aberrant reach dwarf Crusader, Swordsage, Swift Hunter, and eventual Anima Mage/Incantrix using Precocious Apprentice + Fiery Burst). It includes flaws (per campaign rules) but could be fairly easily tweakable to work without them. It also uses early entry tricks with DMM: Heighten for entry into SCM at level 4, otherwise you just stay in CC until 5, pop into Malconvoker for a bit, and start weaving in out out of Malconvoker and SCM once you hit the spell/feat reqs for SCM. On paper this should get pretty good bang for it's spell-slot buck eventually with residual magic and DMM: Heighten to pop-out high level shadow magic with low level slots, and there is a certain "thematic match" between Malconvoker and SCM in some respects. This takes Contemplative at level 12 simply for the travel domain, and that's purely optional (and something of a skill tax since Contemplative needs Know Religion 13).
Cloistered Cleric of Akadi (Illusion - with Spontaneous Domain ACF / Trickery / traded away Knowledge domain for Divine Magician with DM approval, but Knowledge Devotion would make for a smoother play experience at low levels I believe).
1) Cloistered Cleric 1 Spell Focus (Illusion), Heighten Spell, Divine Metamagic (Heighten)
2) Cloistered Cleric 2
3) Cloistered Cleric 3 Spell Focus (Conjuration)
4) Shadowcraft Mage 1
5) ShadowCraft Mage 2
6) Shadowcraft Mage 3 Augment Summoning
7) Malconvoker 1
8) Malconvoker 2
9) Malconvoker 3 Earth Sense
10) Malconvoker 4
11) Malconvoker 5
12) Contemplative 1 Earth Spell
13) Shadowcraft Mage 4
14) Shadowcraft Mage 5
15) Malconvoker 6 Residual Magic
16) Malconvoker 7
17) Malconvoker 8
18) Shadow Adept Shadow Weave, Tenacious, Pernicious, Insidious Magic
19) Cloistered Cleric 4
20) Paragonist Apostle 1 (for +1 to Illusion CL)
BTW... Is it me, or for a blast spell is Wings of Flurry ridicilously nice on a SCM? (if you care to do such things as blast, I know)... I mean, the uncapped CL damage + Earth Spell = shenanigans. Are sorcerer only spells actually valid spells to be emulated by shadow illusion, since it's not on the "sorcerer/wizard list", but just the "sorcerer" list? Also, I've seen slashing dispel (PHII) noted as a target for Shadow Illusion, but does the dual abjuration/evocation tag render it an illegal target as well?