Gwynevere, Sunlight Princess

At the beginning of your upkeep you gain 2 life
and draw a card.
{u}{b}: Draw a card then discard a card.
When Gwynevere, Sunlight Princess leaves the
battlefield destroy all creatures then each player
creates 2 2/2 Human Knight creature tokens
with vigilance. Then search your Library for a
card named Dark Sun Gwyndolin and place it
onto the battlefield.