Spark Double [Secret Lair: Heads I Win, Tails You Lose] Sarkhan Bird creatures get +1/+1 for

Bird creatures get +1/+1 for each feather counter on Soulcatchers' Aerie

The killer app

Megamorph {4}{G} (You may cast this card face down as a 2/2 creature for {3}

it dips into all five colors

Reverse Type: Token Creature — Spirit Flying

Spark Double [Secret Lair: Heads I Win, Tails You Lose] Sarkhan Bird creatures get +1/+1 forSet: Secret Lair: Heads I Win, Tails You Lose Type: Creature Illusion Rarity: Rare Cost: {3}{U} You may have Spark Double enter the battlefield as a copy of a creature or planeswalker you control, except it enters with an additional +1 +1 counter on it if it's a creature, it enters with an additional loyalty counter on it if it's a planeswalker, and it isn't legendary if that permanent is legendary.