The Paradox of Chaos

Read this card to yourself before playing it.
Upon playing this card, announce that
all instants cost {0} instead of their mana cost for
the next 30 seconds. However, only the first
instant cast during this will have any effect. You
gain life equal to the played instant's CMC.
The thorny web of the forest hides a
dangerous secret: for every spell free
within, another is trapped.