Letter of Thanks

When Letter of Thanks enters the battlefield,
gain 4 life.
{t}: Scry 1.
{4}, {ut}: Reveal the top card of your library. If it's
a creature card with Mana value less than 4, you
may cast it from your library without paying it's
mana cost.
"Also, don't forget, you did save someone. Healing
begins in the mind. Try not to worry. Stay positive."
-Doc