Some spells based upon various supernatural liquid substances, and it appears acids especially have become slightly harder to create from older editions…
This first spell for conjuring a corrosive acid could be created upon the target without the Rego requisite, which technically makes it an easier spell to cast. In prior editions, there must have been some complexity for targeting and also for different material types, however in 5th edition it is far simpler to accept that the acid itself is resisted, so therefore the Rego component will hit automatically, or the acid may be created upon the target directly.
Globe of Corroding Waters
Creo Aquam / Rego 30, R: Voice, D: Momentary, T: Individual
Creates a globe of acid which is flung at the target inflicting 20 damage, and will corrode items and people alike.
(Base 20, +2 Voice)
This spell is cosmetically different, but essentially a very similar effect using concentration to constantly supply fresh acid.
Creo Aquam 35, R: Voice, D: Concentration, T: Individual
Creates a spray of acid that arcs out from the caster’s hand, covering the target. The spray is 1/2 foot across at the peak (the caster’s hand) and 2 paces across at the base 5 paces away. Damage from the acid is +20, and the acid damages everything it hits.
(Base 20, +2 Voice, +1 Concentration)
The last spell I changed from Sight/Conc to be Touch/Moon as I think it better suits how such a substance will be used. It might be a siege defense tool or a horrible bath. It becomes an unnatural fluid inflicting damage at the level, as per the Spell Guidelines.
Fire of the Deep
Muto Aquam / Ignem 20, R: Touch, D: Moon, T: Individual
This spell transforms about a barrel’s worth of water into a non-viscous fluid that burns and destroys like fire, inflicting +4 damage. It is not burning oil, as other spells produce, but a substance which itself is, in many respects, fire. It is more intense than ordinary fire, but similar in its effects – paper is burnt to ash, wood charred and eventually consumed, stone merely blackened and heated. Unlike ordinary fire, however, this does not spread (though it may light other fires), nor can it be doused by mundane means, so long as the spell is maintained.
(Base 4 for a highly unnatural substance, +1 Touch, +3 Moon)
Over 642+ new spells for Ars Magica can be found here.