Enlightened Professor Yumaki

Enlightened {2}{u}, Pay 1 life {t}: All Instant or
Sorcery cards in your hand gain "You can cast
this spell without paying it's mana cost if you
have not already cast a spell without paying it's
mana cost this turn. (All specified cards gain
a noted ability.)
The ancient ritual fragment half worked. The
magically impotent student Yumaki was touched by
the infinite in a way that made no spell beyond
her power.