sacrificer

noun

1. Someone who sacrifices, one who makes a sacrifice.

   “Our course will seem too bloody, Caius Cassius, To cut the head off and then hack the limbs, Like wrath in death and envy afterwards; For Antony is but a limb of Caesar: Let us be sacrificers, but not butchers, Caius.”

   “In this you’have made the Court the Antipodes, And will’d your Delegate, the vulgar Sunne, To doe profane autumnall offices, Whilst here to you, wee sacrificers runne;”

   “So, when some brawny Sacrificer knocks, Before an Altar led, an offer’d Ox, His Eye-balls rooted out, are thrown to Ground;”

   “[…] no sacrifice is valid unless the sacrificer lay his hand upon the head of the victim.”