RUBY: You're scaring me now.
DOCTOR: That thing must be part of the Pantheon. Oh, Ruby, there are vast powers beyond the universe. I told you, when we first met. I said, I said the Toymaker... And defeating him took everything. It ripped me in half.
RUBY: But you survived.
DOCTOR: It literally... it tore my soul in half. I can't survive that again. The Toymaker said... he said, he warned me, he said, "My legions are coming. My legions are coming." He said, "My legions are coming."