"Considering how quickly it devoured that sandwich, I'd rather not touch it either." That thing tore a sandwich to bits, it'll probably maul his fingers something fast.

"Is it always that ravenous when you summon it that way? Is there a way to summon the source and have it be more sedate?"

Knowing next to nothing about the source of Tyki's magic, Strange is treating the dark matter like it's something interesting and unexpected, more of a power granted by the carnival than a magic. After all, none of the people he knew had magic that was so visual.