What's the noun for optative? Here's the word you're looking for.
optative
(grammar) A mood of verbs found in some languages (e.g. Old Prussian, Ancient Greek), used to express a wish. English has no inflexional optative mood, but it has modal verbs like "will", "might", and "may" that express possibility.
“It is difficult not to grin, if Ptolemaic land-leases or Greek optatives or German monographs make you giddy.”
“I now see that the verbs prapdtet, sayita, and adyuh must be potential optatives under the scope of an unexpressed yad 'if', rather than optatives of wish.”
