"It's not hard," Robby supplies; tipping the petals into the bowl first, the rest of the items necessary placed to the side for now. "I can do it, but they say it's better if you take turns putting everything in. We need to mix everything up, add something from us... and then you get a paste you use to make the mark."

He would feel more fancy, if the whole affair wasn't so strangely straight-forward for an otherwise life-altering event (if only it was more complicated for Daniel, and when it came to Terry Silver....). They already had a bowl doused in moonlight, a flower of the patron pthumerian that watches over the bonds, the ash of deer bones, and the water to turn it into the consistency they need it to be.

"We can use hair." Robby gets a few crushes of the petals in before he suggests it, then pauses; rolls his lips together, then hands over the silver bowl for Mister LaRusso to take his turn. "...There's also blood, but, uh--we don't have to."

Because there's the part of Robby that hasn't forgotten what he did to his father under the corruption's influence, and there's also the parts of them that he still recognises as outsiders to the ways of this world--who find bleeding willingly pretty fucking weird.

...but maybe they've crossed over that line. And there's a reason Robby brings it up at all, that using blood makes for a better connection, but--it's not necessary to explain.

(He's forced his dad to bleed enough.)