Bottom Line: Short-term flipping: English cards (easier to sell) Long-term investment: Japanese cards (growing demand, lower cost basis) Safest bet: Collect both
If you need a board wipe for creatures, and youre playing white, you should be playing Vanquish the Horde in most cases
(The exception on rarity are those serialized reprints of cards that are intentionally limited before printing)
Sounds like a lot, but don't worry
If you manage to activate the Inherited Effect of [EX8-023 PolarBearmon] your Ice-Snow trait Digimon will gain and letting you sweep away the opponents Security like an avalanche
Just imagine this in something something Dragon Rulers: Pay 2k Life Points, get a 5k beater (a lot of pressure if you have the Lances and anti-effect cards to back it up), and any DRoolers still in your Deck are now in the Graveyard so that next turn you can start slinging them out and getting your Dracossacks and Big Eyes out onto the field