Mindfire Grand Master

Mindfire Grand Master can't be countered.
Instants and sorcery spells you control can't be countered by spells or abilities.
{2}{r/w}{r/w}: The next time you cast an instant or sorcery spell this turn, you may search your library for an instant or sorcery with a converted mana cost less than the cast spell. If you do, reveal that card and put it into your hand, then shuffle your library.