Remie didn't play a lot of green cards in his main deck or anything, he just realized that as long as a RW deck is already willing to play Bloodstained Mire, Flooded Strand, Windswept Heath, and Wooded Foothills (as Tsapko's straight RW was), it might as well get paid off
While there isn't necessarily a "right" or "better" pack to pull on, some Pokmon are only available in certain packs
The Pokmon Gold and Silver Johto region Legendary is brought to life in the Hidden Rare V card, as its textured artwork foil is surrounded by a burst of swirling colors
One last enchantment that will really pull its weight in a deck like this is Cathars' Crusade
However, there is a larger question here
Flayer of Loyalties A friend-killer Flayer of Loyalties is a ten-mana 10/10 with annihilator 2, which means that whenever it attacks the defending player has to sacrifice two permanents