Birds of Paradise [Alpha Edition] Promo If the discarded card has

If the discarded card has 6 or more [Power]

Set: Ravnica: City of Guilds Type: Land — Mountain Plains Rarity: Rare ({T}: Add {R} or {W}

Set: Return of the Duelist Card type: Xyz/Effect Monster Rarity: Super Rare Attack: 1500 Defense: 1500 3 Level 4 Spellcaster-Type monsters This card gains 200 ATK for each Spell Card in your Graveyard

by Tributing 1 Thunder Effect non-Fusion Monster (in which case you do not use "Polymerization")

Occasionally something surfaced in the thick paste

Birds of Paradise [Alpha Edition] Promo If the discarded card hasSet: Alpha Edition Type: Creature Bird Rarity: Rare Cost: {G} Flying {T}: Add one mana of any color.