Forged Destiny [Book 6: Ch. 6]

A small chunk of metal came free and I placed it against the back of her shoulder. The Rune of Cold Steel. My armour Rune.

"Grit your teeth," I whispered, directly into her left ear. "This might feel a little odd."

"What do you- meaaahhh!?"

Ruby's entire body flailed in my grip, legs kicking out and splashing into the water as her upper body sagged and she yelped, falling back against me. Her legs twitched a little more and she struggled to breathe as her Constitution increased almost by a factor of six. With the Rune of Cold Steel and the Minor Rune on her scythe, Ruby had gone from five to twenty-nine Constitution, which must have been a shock to the system.

—Forged Destiny [Book 6: Ch. 6]