I was wondering, what are some mill cards (preferably standard) that allow me to target myself?
{Traumatize} is a good one
{Blue Sun's Zenith}
{Drown in Filth}, {Rot-Farm Skeleton}, {Deadbridge Chant}, {Steam Augury}, and {Codex Shredder} are all Standard legal and serve different purposes. Innistrad block had better options though, if you could go there.
Almost any mill cards work, most all of them say target player. And you can legally target yourself.
{Dreamborn Muse}