Sunbird's Invocation [Ixalan Prerelease Promos] Treefolk Warrior Whenever a Dragon you control

Whenever a Dragon you control becomes the target of a spell or ability an opponent controls

sacrifice a green creature

When Guan Yu

Its controller may search their library for a basic land card

Set: Chronicles Type: Land Rarity: Rare Whenever City of Brass becomes tapped

Sunbird's Invocation [Ixalan Prerelease Promos] Treefolk Warrior Whenever a Dragon you controlSet: Ixalan Prerelease Promos Type: Enchantment Rarity: Rare Cost: {5}{R} 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.