Thunder Book
Axe:
Sends lightning out to attack most of the enemies on the screen.
Bible:
Creates a shield in front of Juste. Very useful, because they absorb lots of hits before they disappear. Also note that these are the same shields as in the Gradius games - they even make the same noise when they're hit.
Cross:
Just like the Cross item crash from Dracula X, this will create a beam of light with swiling crosses that will devestate anything close to Juste.
Dagger:
Juste tosses a barrage of daggers in the air, which comes raining down on the enemies a few seconds later. Looks cool, but the delay makes it less than useful.
Fist:
Shoots concentrated lighting at the enemies, much like the Aguenea from Symphony.
Holy Water:
A small column of lightning moves back and forth across the screen. Not very good, since it seems to move randomly.

Fire Book
Axe:
Creates some fire dragons that attack the enemies on the screen for a short time.
Bible:
Juste drops a bible that creates a column of flames.
Cross:
A burning cross (oh jeez, that doesn't look good) is sent out, before it explodes in a spiral of flame.
Dagger:
A flame is fired out and bounds around the screen.
Holy Fist:
Four small moving fireballs are shot out.
Holy Water:
A flame ball bounces around on the bround a little bit.

Ice Book
Axe:
A large block of ice will crush an enemy on the screen. Pretty powerful.
Bible:
What appears to be water flames (??) spread along the floor.
Cross:
An ice familiar is created that shoots off three steady streams of icicles before disappearing. One of my favorites.
Dagger:
Juste tosses a flurry of daggers that home onto an enemy.
Fist:
Juste dashes forward, smashing enemies with a big pointy icicle. Would be more useful if it didn't put you in harm's way.
Holy Water:
Small pieces of ice begin to gather around an enemy for a few seconds.

Summon Book
Axe:
Juste turns into a demon, whose wings turn into blades and fly around the screen for a bit.
Bible:
Summons a familiar similar to the fairy from Symphony, who will then bash an enemy with a hammer after a few seconds. Cute but slow.
Cross:
Some cloaked wizard appears and rains meteors.
Dagger:
Summons a cockatrice who litters the screen with sharp feathers.
Fist:
Summons the multi-armed (Hindu?) God that will punch randomly around the screen for a few seconds.
Holy Water:
A maiden (Greek goddess?) flies across the screen a couple times, sprinkling deadly sparkles along the way.

Wind Book
Axe:
A lone axe rotates in place for a few seconds. Lame.
Bible:
A few bibles surround Jeust, protecting him for a short period of time.
Cross:
A flurry of crosses spin around Juste. Better than the bible because there is no time limit - it disipates as it takes damage, like the Thunder+Bible combo.
Dagger:
Just like the old item crash, Juste tosses daggers for about ten seconds. Very useful because you're invincible while you're throwing.
Fist:
Tosses a quick moving fireball straight across the screen.
Holy Water:
Again like the item crash, this will cause holy water to rain across the screen for a few seconds.