Arben's Goggles

{t}: Add {c}. Spend this mana only to cast instant
or sorcery spells.
Whenever you cast an instant or sorcery spell, if
you've cast two or more other instant and/or
sorcery spells this turn, transform Arben's
Goggles.
———{line}{line}{line}
Like everything else he made, Arben's career started
as nothing more than an idea.