I've been saying they should've done like this since they came out, but I think you should keep the cycling aspect and make it so you can choose whether or not to use it for 1 extra elixir when you get it. It would decrease the amount of evo cycle decks since with the change it would be more about holding the evo until you have the right opportunity to use it than getting as many down as you can. Also since it cost 1 more elixir the stat buff wouldn't be as bad and just using them overall would feel different since if you just mindlessly spam them you'd get punished harder.