Avediel, Divided Devotee

Whenever one or more creatures deal combat damage to a player, choose Seraphs or Usurpers:
Seraphs - Put an exalted counter on target land you control and draw a card. If only one creature attacked this turn, you may search your library for a basic land card and put it onto the battlefield tapped. Then shuffle your library.
Usurpers - Mill two cards and draw a card. If only one creature attacked this turn, return a land from your graveyard to the battlefield tapped.