Sunbird's Invocation XLN/165

Set: Ixalan
Collector Code: XLN/165
Name: Sunbird's Invocation
Type: Enchantment
Oracle text: Whenever you cast a spell from your hand, reveal the top X cards of your library, where X is that spell's mana value. You may cast a spell with mana value X or less from among cards revealed this way without paying its mana cost. Put the rest on the bottom of your library in a random order.
Rarity: Rare