Sunbird's Invocation [C21 - 180]

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 revealed this way with mana value X or less without paying its mana cost. Put the rest on the bottom of your library in a random order.

Rarity: Rare

#: 180

Card Type: Enchantment, Enchantment

Card Color: R

Casting Cost: {5}{R}