For sacrifice fodder , you have a variety of token generators like Selesnya Evangel and Selesnya Guildmage as well as creatures that like to die including Yavimaya Elder and Symbiotic Wurm
Thankfully, you won't expend any stamina if you lose the battle, and Event Hourglasses, which reduce the timer for stamina, can be earned by completing battles for the first time alongside a few other rewards
(I can only imagine how devastating Amethyst or Angelite would be in 2006 as, say, an alternative build to LBS, whether it proved to be optimal or a gimmick) Of course, the comforting thing about Sylveon ex is that you can try to punish basic-heavy decks and can just guarantee that targeted evolved Pokmon won't just evolve again
It also has fear, which sometimes makes it easier to deal command damage
When a card as strong as Lugia VSTAR also has attractive artwork, its price tends to increase quickly