General description:
This card has a variety of uses, but mostly saves you when you'd otherwise lose a duel.
Uses:
Stopping yourself from losing a duel, and eliminating obnoxious options that remain on the duel zone are its main uses.
Combos with other cards:
Bakemon/Soulmon with this will instantly downgrade your opponent a level.
Ways to counteract it:
Playing Bakemon/Soulmon yourself will make your opponent think twice about it. Otherwise, option eater is your best bet.
Overall rating:
This card is almost good enough to be included in every deck, unless they have other big combos to focus on. For that, I give it a 10/10.