Like most of the cards on the Top 10, the Sphere is card advantage for casual decks, no matter whether they are duels or multiplayer
If we're including variations, then Ra's Sphere Mode card is the most powerful and the most useful
The OP-05 Awakening of the New Era set is filled with rare and valuable cards that have captivated the One Piece TCG community
player knows this card by now at the cost of 1000 Life Points, the effects of every face-up monster on the board are negated for as long as Skill Drain is active
No extra value or tempo, just a bunch of time wasting
You get an unblockable creature, a catch-all for cards entering graveyards, and the ability to sacrifice it to play a card belonging to an opponent that was exiled with a void counter on it