I would say its between Blade and Hyp. Depends what content you're trying to do, the sig level of Blade, if you have the other pieces like GR or Sparky. Thing would be another possibilities if you have his heimdall angela synergy pieces or are trying to do V2. But hyp seems like the better overall fit.
Been trying to figure it out so I want some opinions ASAP
Before you throw too many sig stones at him, unless you care about prestige and he is one of your top 5, HE DOESNT NEED MORE THAN 20 SIG LEVELS. His buff duration increase ranges from +65% at sig1 to +75% at sig 200. Sig 20 is +70%. It scales disgustingly bad, but that is also a good thing because you don’t need to put as many resources into him to maximize his output.