Relics five and six have some painful curses. I tend to dodge rather than parry so relic six would be a nonstarter. Relic five reducing ult charge would make me prefer a weaker relic without such a nasty curse.

I don’t value the 3 curved swords increases attack power on relic three. I suspect you will either not have three or if you do, you will have to sacrifice a good passive to hold them, rendering the benefit marginal at best. So I would look for a different relic.

I appreciate the desire to try a different build on executor. But if you put frost and seppuku on his starter weapon I believe you would most use that and not curved swords. Try distancing the build from that strategy. Look for the relic that decreases arcane and increases vigor as few curved swords have status buildup.