Ysroth, God of the Seas

Flash, Shroud
Ysroth Cannot be countered. When you cast Ysroth, you may draw 3 cards. If your devotion to blue is more than 20, split your library into 2 piles. Choose one, you may scry that pile and place it on top of the other.
Those who seek Ysroth either drown in water, or knowledge.