Flying
Whenever Thrummingbird deals combat damage to a player, proliferate. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there.)

• Number: 65
• Rarity: C
• Power: 1
• Toughness: 1
• Type: Creature
• Subtype: Bird Horror
• Mana cost: 1U
• Color: Blue
• Artist: Efrem Palacios