Weird Arcana - Chalice of the World Serpent (New Spell)

Ok, here's another bizarre dweomer. It's based on the same  "principles" (if one can call that principle) of my first Weird Arcana. At least this one tries to be (just a little) more praticle (and I hope that English is more tolerabe now).

Chalice of the World Serpent

Transmutation

Level: Sorcerer/Wizard 4, Witch 4
Components: V, S, F (a chalice, filled with wine, adorned with emeralds, worth 500 GP)
Casting Time: 1 standard action

Range: Personal (see text)
Target: You (see text)

Duration: 1 round/level (see text)
Saving Throw: none (harmless)
Spell Resistance: none (harmless)

This baroque spell, almost forgotten by the arcanists of the present age, temporarily empowers a chalice, filled with wine, making it resonate with the power of earth and stability, associated in ancient times with a divinity or force known as the World Serpent.

Once chalice of the world serpent is cast, the dweomer’s effect can be passed to a new target, just by giving him the chalice. Basically, the spells is centered on its arcane focus.

The chalice shines, illuminating its surrounding as a light effect of 4^th level. The chalice-bearer, who must hold it with his right hand raised high, is attuned to the forces of stability, and is immune to bull rush, overrun, trample and trip maneuvers. In other words, no creature can push, overrun, trip or trample him. All these maneuvers automatically fail and the charging creature merely stops before the chalice-bearer.

Chalice of the world serpent is instantly dismissed if the target runs, drop the chalice or strikes a reptile. Note that the target isn’t immune to grapple or disarm attempts. If the chalice is stolen from him, its effect pass to the taker (however, nothing can stop the caster from normally dismissing the dweomer).

If the chalice-bearer drinks from the wine, the spell is cancelled but the target gains a +15 bonus to one bull rush or overrun maneuver, if attempted before the end of the target’s next turn.