Ouranos

Each of these clues gives a hint to a word which is an anagram of the given consecutive alphabetic string, with one letter changed. The answers are:

massages RSTU RUBS
pen IJKL JAIL
stole CDEFGHI FILCHED
sharp object ABCDE BLADE
Norse god IJKL LOKI
hammer IJKLMNO MJOLNIR
ground RSTU TURF
meme DEFG DOGE
woe EFGHI GRIEF
walks heavily OPQRST TROMPS
like some hair VWXY WAVY
storied ABCDEF FABLED

In each answer, you must read the new letter (i.e. the one that was not listed in the alphabetic string). Doing this spells out BALL OR FORMAL, which clues the answer, DANCE.