It is effectively a sideways upgrade that is specific to cube (in that in other formats such a change would likely be a downgrade) much like Dreadbore over Terminate
Of those, five create a Royal Role, five create a Sorcerer Role, eight make a Monster role, five will enchant with a Young Hero Role, six will create a Cursed Role, Wicked has the most options with ten cards that make a Wicked Role, and lastly only one card can create a Virtuous Role
All of which feels like something Nekusar, the Mindrazer would be after
Improvise is an effect I really enjoy and think it could be pushed further in the future
Retrieved June 20, 2016
Creature - Rogue Faerie Nettling Nuisance Flying Whenever one or more Faeries you control deal combat damage to a player, that player creates a 4/2 red Pirate creature token with "This token can't block." The token is goaded for the rest of the game