You can theoretically flicker most monarch permanents or give them flash, but only Denethor lets you do it with no other effects
This card depicts a giant Espeon sleeping on the roof of a massive building during a bright, sunny day
I do really like the flavour of each player pumping mana into Chain Lightning to have it jump back to a second target on the opponent's side of the field, and so on and so on
It stipulates the creature must be legendary, but thats hardly a problem in Commander, where it sees the most play
The Dimir God of Theros, Phenax possesses indestructibility, making him a huge hassle to remove
This makes him ideal for players who want a smooth, reliable engine built on the best Commander staples rather than fragile combos