english one piece booster box PRB-01 Premium Case (10x Boxes) A Special Booster Pack to Commemorate the 3rd Anniversary One Piece Booster Boxes (English)

So far the economy is alright and since they already announced there will be a fix for duplicate cards in event runs it should become easier over time to get your decks together

Need to remove an attacker - or multiple ones

Card Text: Whenever you cast a spell, if its mana value is equal to 1 plus the number of soul counters on Obscura Ascendancy, put a soul counter on Obscura Ascendancy, then create a 2/2 white Spirit creature token with flying

The colon indicates that it's an activated ability, and you'll need a Stifle or Stifle-like effect to counter it

Aside from the cards you play, and the modal cards that appear in sets - which are just cards with multiple modes of casting - its hard to get a feel for that in Magic: The Gathering