You can cast a bunch of instant and sorceries and overwhelm your opponents with evasive threats
Individual cards, such as Bosss Orders, Birabel, and Quick Ball, arent expensive individually, but getting the playset of the cards does cost roughly a couple dollars each
Card Set(s) -Royal Blood- [OP-10] CARD VIEW OP10-057 | R | CHARACTER Leo Attribute Strike Block Icon 3 Type The Tontattas/Dressrosa Effect [On Play] You may rest your Leader or 1 of your Stage cards: If your Leader is [Usopp], look at 5 cards from the top of your deck
Victory Conditions You win the game by meeting one of the following conditions: 1) You win a battle against your opponent's Leader when they have 0 Life cards remaining
Each usage costs half our life, so the starting 20 life allows us to pay that cost four times before going down to 1
Also, this is something the game has already done for lands