User blog comment:Commander Marko/Cygnus, The Galactic Magus/@comment-5686533-20130829112930/@comment-4290320-20130829113302

Glad you liked him! As for the answers:

Cygnus can hold up to a maximum of 1000 Dark Matter, scaling is 100 (+ 50 x level).

Yes, Cosmic Abyss acts like a multi-Blitz pull. Does disable all enemy champions, pets and minions in the AoE.