my theory is that the last shadowhunter actually refers to alec who will then become immortal and live happily ever after adopting tons of kids with magnus.
i hear you asking "but what about all the other shadowhunters?" and to that i say i do not care <3
me explaining to cassie how having a scene of magnus being unhinged and losing control when alec is hurt in black volume of the dead will have internationally economically culturally socially artistically benefit to our civilization
alec: ask me why I love you.
magnus: is this some kind of trap?
alec
alec: just ask.
magnus: okay. why do you love-
ale, pulling out at 15 foot long scroll of paper: i’m glad you asked!
Velvet coats, clever eyes, glitter, grins, and golden buttons, knowing something they don’t, confidence, sparkling like all the stars in the sky, pins on your lapel, the world at your fingertips, seeing through the facades, heavy air, the smell of freedom, cologne, twilight, and magic.