This is the source question asked by another user, with respect to which the above is asked.
Yes lord shiva embodies all the gunas.
Originally, lord sada shiva divided himself into Trinity which is lord Brahma (rajas Guna), lord vishnu (satva guna) and lord rudra (tamas guna).
As said by lord Krishna himself in Mahabharatam.:
"O the lord of lord! Myself (Krishna/Vishnu), brahma, kapila, ananta (sheSha), all the valiant sons of brahma who conquered over the internal enemies - all are created from you (Shiva). Hence you are the lord of all. Hence you, the lord of all, are worthy of praise."
He balances everything by his trishool.:
These are some lines from Wikipedia which describes the significance of the trishool of mahadeva.
The three points have various meanings and significance, and, common to the Hindu religion, have many stories behind them. They are commonly said to represent various trinities—creation, maintenance, and destruction; past, present, and future; body, mind and atman; dharma or dhamma (law and order), bliss/mutual enjoyment and emanation/created bodies; compassion, joy and love; spiritual, psychic and relative; happiness, comfort and boredom; pride, repute and egotism; clarity, knowledge and wisdom; heaven, mind and earth; soul, fire and earth; soul, passion and embodied-soul; logic, passion and faith; prayer, manifestation and sublime; insight, serenity and Bodhisattvahood or Arhatship (anti-conceit); practice, understanding and wisdom; death, ascension and resurrection; creation, order and destruction; the three gunas.
Thus lord shiv keep balance of these three gunas in the universe by holding the trishool...
I hope this do answer your question.