Instead, other spells either generate or allow you to spend energy counters for various effects
Moss-Pit Skeleton is probably the best literal Skeleton in Standard, giving us a Grizzly Bears on Turn 2 and a 5/5 for five later in the game, thanks to kicker
If I Remand your spell, I Time Walk you
I initially gave the very-not-Legendary Artifact a lot of side-eye when my opponents tapped out for it on turn four
The deck felt unbeatable, and though WW strategies are traditionally thought of as "bad" in Cube (see Andy Cooperfauss' Rebel errata as a possible fix), I haven't found this to be the case with my current build: My most recent post in the "3-0" thread illustrates the power of what a good friend calls "Death and Taxes cards." Check out this lineup of 1's: Champion of the Parish, Champion of the Parish, Dryad Militant, Dryad Militant, Loam Lion, Loam Lion, Figure of Destiny, Student of Warfare, Isamaru, Hound of Konda, Mother of Runes, Weathered Wayfarer, Wild Nacatl See
Getting to copy another creature and give them both Haste can be very powerful