Here's what rhymes with mynstralcye.
high thy vi hi shy sigh fi hy thigh vie psi hai cy fy sy thei phi by my why die lie y buy fly sky guy tie bi bye chi dye nigh pi pie spy thai dei fry ly quae rye sly ty wir awry lye mai muy nai wry kai lai luy mei tai wai sty stye slier dry try cry rely defy ply purify alibi nullify pry ratify tri trie lullaby pri mollify ramify ossify spry stratify turfy lanai barfly shanghai drachmai banzais yuppify apply supply reply thereby deny nearby occupy whereby clarify hereby modify qualify specify alkali classify verify certify glorify gratify alveoli amplify fortify pacify unify beautify belie falsify pupae terrify typify untie edify overlie vilify aquae bonsai deify retry stultify triply ultrahigh amebae blowfly calcify horrify petrify stupefy scurfy mummify prettify vitrify beatify ripply speechify overbuy imply justify satisfy stimuli nuclei signify simplify testify butterfly goodbye notify underlie diversify magnify rectify samurai standby decry solidify termini amoebae codify crucify descry dignify liquefy mortify personify resupply dragonfly firefly mystify preoccupy vivify emulsify reunify liquify overfly scarify versify declassify gentrify refortify syllabify dandify identify comply multiply exemplify intensify quantify disqualify indemnify acidify detoxify electrify misapply reclassify revivify cumuli dissatisfy hyperbolae solemnify objectify oversupply demystify misidentify transmogrify oversimplify