Mezcal Negroni

1.25 oz Agua Mágica Mezcal
.75 oz Campari
.75 oz Lustau Vermut
.25 oz Carpano Antica

Garnish: A grapefruit or orange lancy horse's neck twist. 

Stir ingredients to temperature in a chilled mixing glass. Strain over a large cube in a chilled rocks glass.