Sunbird's Invocation
Sunbird's Invocation {5}{R}
Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's converted mana cost. You may cast a card revealed this way with converted mana cost X or less without paying its mana cost. Put the rest on the bottom of your library in a random order.
Latest set: [XLN] Ixalan ( R · #165 )