Is it worth to shoot for the last one as f2p player?
You can get it first try or in 1000 tries, not worth spending that much f2p gems for one level, better work on other heroes relic
Late answer, but no, it is not worth at all. You are lucky enough to have 2 super traits. Therefore one missing is not worth resources you would have to use to find one missing trait.
Keep your f2p gems for other events. 6/6 holy conviction is very good for dynamica especially at your might.
And now i think...the 'watch ad' button should be moved to the normal traits roll rather than superior traits since we can use cards for superior traits roll, and we rarely use gems for that.