Prism of Hope

You may only have one Prism of Hope in your library.
When you cast Prism of Hope, choose a color, creatures and other permanents of that color get +6/+6 and gain protection from the remaining colors. They also gain Indestructible, Flying, Deathtouch, and Lifelink. At the beginning of your upkeep, sacrifice Prism of Hope if your opponents life total is 4 or less.
The Prism was a final hope, a shed of light and power, Jace had not one idea how to spare the people of Storm Haven