The great news is that vintage Pokmon card values run a wide range based on their rarity, condition, and market demand
If you don't have any untapped/available mana, you cannot cast anything else
After the baby shinies come 12 full art shinies (designated shiny ultra rare), three fantastic illustration rares, five ultra rares (all of them trainers), eight special illustration rares, and six of the brand new style cards, the turquoise-and-gold raised foils here designated hyper rare. Of my very unscientifically small sample size, I scored six ex cards (somehow including three Great Tusk exes, two from the same Elite Trainer Box), three ultra rares (again, two of them the same Judge), four shiny ultra rares, two illustration rares (both the same
Perhaps just take out a planeswalker and be left with a 7/7 trample
In a deck with flickering, you can offset the exertion
This can single-handedly activate a Chain of several Sylvan effects, and may even turn a losing game around
