Waterfall of Iridescence

This land enters tapped unless it is the second land you have played this turn.

{t}: Add {b}{u}. This land deals 2 damage to you.

{4}{t}: Take the top 10 cards of your deck and split them into to two different piles (one pile face-up, one pile face-down). Target opponent chooses one pile for you to add to your hand. The remaining cards are placed in your graveyard.