This build is the definition of "keep it simple, stupid." You , , then you , do the last two again, then a bit to regenerate mana.
allows for significantly greater damage at the cost of your own personal safety, if you like taking risks and have a lot of confidence in your positioning, or just like big numbers, this is a good option. If not, check the alternate skills for a more defensive utility option. and are the stars of the show here, giving us major damage for for doing what we were already doing.
In a sufficiently nonthreatening fight you could effectively hold the button down since the 3.8 second cooldown we have is shorter than the 4 second buffs we receive. The notable exception to this is if you are moving out of an AOE, or to avoid an attack. Speaking of AOEs; be cautious when time traveling, 4 seconds is longer than you think, and targeted lingering AOEs like the void pools Julra summons when you time travel while fighting her can be deadly if you accidentally reverse back onto one.