What It Scores
WIZ is a valid word in the tournament list this site uses. Tile values only, before any premium square: 15 in Scrabble, 15 in Words With Friends, 15 in Wordfeud. The letters break down as W4 I1 Z10.
Longer Words Containing WIZ
WIZ appears inside each of these, which is what makes it worth knowing as a hook.
Next: the Word Unscrambler for any letters at all, and the two and three letter lists. Full entry and definition at Merriam-Webster.