[Helix holds the knife in his left hand and opens the right palm, pressing the tip to it and cutting in enough to draw blood. He winces some, barely a hiss but eventually he turns his hand to press his fingers in and squeeze drops of blood out. He watches them hit the stone, pattering softly and spreading through the cooling red spatters already there. It's... interesting to watch the two colors mix and strangely enough it stirs some sort of meaning in his heart. It's a weird way to think of it but... it's symbolic in more ways than just the ritual of a holiday.
Once there is a nice, thick layer of blue cooling on the stone he'll hand the knife over and look for something to wrap his hand. Unless Aidan does it for him...]