Woodland man/woodland gollum

My idea is to create a wooden gollum or woodland man with an emerald necklace. The necklace will create emeralds for the player. The woodland gollum is created by putting two wooden blocks on top of each other and then putting an item frame on the top block and then putting an emerald into the item frame. This results in the creation of the woodland man. The woodland man's emeralds are available to a player by sheering his necklace during gameplay. Emeralds would only be available every nine minecraft days. Woodland men do not work in the presence of zombies or hostile mobs. Pillagers would kidnap woodland men by putting leads on them and bringing them back to their outpost or mansion. 

This would be a new way of acquiring emeralds that did not need mining or trading with villagers. 

Andrew, aged 10