Rylai's/Liandry's on AP Ezreal
Do
and
proc on
's Q?
Do
and
proc on
's Q?
no
They apply on spell effects, and Ez Q specifically does not apply spell effects.
Not Rylai's because it has on-hit effects. Click: Ability details [Show] http://leagueoflegends.wikia.com/wiki/Ezreal