prb booster box One Piece PRB-02 Japanese Display – JapHunter Premium Booster Box [PRB One Piece Trading Card Game

They even both hail from the plane of Amonkhet

Card x10 Play Sheet x1 PREMIUM BOOSTER PACK [PRB-01] x1

You dont need to power up Vivi with her triggered ability, either

Assuming you can afford to pay eight mana and unlock both Rooms right off the hop, every enchantment cast produces +1/+1 counters equal to its mana cost, and every permanent you cast immediately becomes an enchantment

which is just one of the most powerful normal summons and a true one card combo

Solphim, Mayhem Dominus Solphim, Mayhem Dominus boasts a nearly unrestricted damage doubling effect on top of an impressive Dominus creature that you can turn indestructible whenever you like