op 10 one piece booster box TCG: Royal Blood (OP-10) — Game Haven decks built around the new cards are powerful enough to give newcomers a chance to compete with experienced players! One Piece TCG: Royal Bloodline

If a nontoken creature an opponent controls would die, instead exile it and you gain 2 life

The only issue, assuming you don't consider costing ten mana an issue, is that resolving four cascades in a row can get complicated, especially when individual cascades hit other cascade spells mid-resolution

Outside of the Hydra box, Id look to make Gargos even larger and start killing people with commander damage

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Oko homogenized deck-building so impressively that if your deck had even the slightest hint of Blue or Green, then congratulations