Ease and Grace.
/Ease: In comfort, without anxiety or annoyance, unconstrained, unembarrassed. Facility as opposed to difficulty.
Grace: Refined elegance of manner, expression, form, or movement. Regarded as natural or effortless.
She moved through the water with effortless grace.
A state where we play seemingly effortlessly and the scene just flies by. The highest level of work is done like this.