Elementalist summoning spells 2

Continuing my work on an elementalist class for Labyrinth Lord, here are some mid-level summoning spells. These spells form the basic tools for an elementalist summoner -- they don't have any particularly exotic effects, but I want to get the foundations laid before moving on to the more unusual spells.

The rest of this post is designated Open Gaming Content according to the Open Gaming License.

Banish Elemental
Level: 3
Duration: Instant
Range: 120'

This spell causes summoned elementals to return to their plane of origin. A single elemental, of any number of Hit Dice, is affected.

Command Elemental I
Level: 5
Duration: 1 turn per level
Range: See below

This spell has two possible effects, chosen by the caster at the moment he casts the spell. Firstly it may be used to take control of an elemental of up to 8HD within 120'. A free-willed elemental is allowed a saving throw versus spells to resist, but if it fails it must obey the caster's commands unfailingly for the spell's duration. If the targetted elemental is already under the control of another wizard (either by use of this spell, or as the result of a summoning), there is a base 50% chance that the caster can gain control of it. The chance of success is modified by 5% per level difference between the caster and the controlling wizard.

Alternatively, the spell may be used to augment a subsequent casting of summon elemental I, cast within the duration of 1 turn per level. In this case the duration of the summoning is reduced to the remaining duration of this spell, but the elemental can be controlled without concentration, and without any risk of it turning on the caster.

Command Elemental II
Level: 6
Duration: 1 turn per level
Range: See below

This spell works in the same way as command elemental I, but can either be used to gain control of an elemental of up to 12HD, or to augment a casting of summon elemental II.

Command Elemental III
Level: 7
Duration: 1 turn per level
Range: See below

This spell works in the same way as command elemental I, but can either be used to gain control of an elemental of up to 16HD, or to augment a casting of summon elemental III.

Elemental Cancellation
Level: 2
Duration: Permanent
Range: 120'

Similar to the 3rd level magic-user spell dispel magic, this spell enables an elementalist to cancel ongoing elemental-based magical effects. When memorizing this spell the caster must choose which of the four primary elements (fire, air, earth, water) will be affected. Only magic of the chosen element may be dispelled, but in all other respects this spell functions in the same manner as dispel magic.

Summon Elemental I
Level: 3
Duration: Permanent
Range: 240'

This spell functions in the same way as the 5th level magic-user spell conjure elemental, but summons an elemental of the weakest type - with 8HD. In addition to the standard fire, air, earth and water elementals, elementalists are also able to summon a variety of alternative elementals using this spell.

Summon Elemental II
Level: 4
Duration: Permanent
Range: 240'

This spell functions in the same way as the 3rd level summon elemental I spell, but summons an elemental of the middle type - with 12HD.

Summon Elemental III
Level: 5
Duration: Permanent
Range: 240'

This spell functions in the same way as the 3rd level summon elemental I spell, but summons an elemental of the greatest type - with 16HD.