If neither of those are available, you've always got Craterhoof Behemoth and Akroma's Will to brute-force a win
More recent sets also have lots of ways to make treasure tokens, which deal with your mana fixing problem early and give you lots of throwaway artifacts to sac to Breya in the mid to late game
Youll endure endless renditions of the theme song and step on a stray D20, but watching a shy kid light up when their Butterfree card clinches a win
Izzet Generatorium A lovely, cheap enabler for energy shenanigans, including all the infinity and beyond up at these reaches of the ranking, Izzet Generatorium has unprecedented and fascinating text which references losing energy, thus far a thing that isnt possible
The official Topsun website lists Pokmon patents registered in 1997
All that mana does no good if your well-known threat of a commander gets countered, so a Cavern of Souls is excellent protection