What are the abilities of Shrine of Piercing Vision?
user
At the beginning of your upkeep and whenever you cast a blue spell, put a charge counter on Shrine of Piercing Vision.\n{T}, Sacrifice Shrine of Piercing Vision: Look at the top X cards of your library, where X is the number of charge counters on Shrine of Piercing Vision. Put one of those cards into your hand and the rest on the bottom of your library in any order.
assistant