Try to avoid sacrificing these to effects like Wildfire or Tectonic Break where you can
Even for Spirit Monsters with relatively powerful effects, expensive Tribute costs and a wide-open field next turn make them nearly impossible to incorporate in a modern competitive Deck
When the gacha gods refuse to award you that Kangaskhan youre pulling for, pack points allow you to simply buy it (or, yknow, any card youre aiming for)
In partnership with The Pokmon Company International and Nintendo, Western Digital is introducing the SanDisk Pokmon Snorlax microSD Card (1TB*), the SanDisk Pokmon Gengar microSD Card (512GB*) and the SanDisk Pokmon Pikachu microSD Card (256GB*)
That's a pretty hefty tax in most decks, and you'll probably need some white mana ramp cards to help pay for it
You have to be careful not to push too far, but I think the improvise cards printed so far have all toed that line really well