As part of a November 2017 Ars Magica writing challenge – I’m doing one spell a day.
Sliver of Horrible Ice
Muto Aquam 30, R: Touch, D: Diameter, T: Individual
Transmutes the ice touched into a toxin capable of inflicting a fatal wound when consumed, unless the imbiber succeeds 9+ Stamina check.
(Base 10, +1 Touch, +1 Diameter, +2 to increase the Stamina check)
Over 650+ new spells for Ars Magica can be found here.