Etiennette de Montagne

At the beginning of your upkeep, flip a coin. If you win, counter all opponent's spells unless they pay {1}. If you lose, until the end of turn, counter all of your spells unless you pay {1}.
Whenever a creature an opponent controls attacks you, it's controller flips a coin. If they lose the flip, remove that creature from combat.
"Just because you figure it out one year, doesn't mean you'll get it the next."