April 1st 2018 Limit Regulation

Straight from Yu-Gi-Oh!.jp, changes apply only to the OCG.

Forbidden:

Blackwing – Gofu the Vangue Shadow
Phoenixian Cluster Amaryllis

Limited:

Destiny HERO – Disk Commander
Double Iris Magician
Supreme King Darkwurm
Grinder Golem
Lonefire Blossom
Predaplant Ophrys Scorpio
El Shaddoll Winda
El Shaddoll Construct
Spellbook of Knowledge
Invoked Mechaba

Semi Limited:

Ash Blossom & Joyous Spring
Aleister the Invoker
Solemn Judgment
True Draco Heritage

Unlimited:

Tribe-Infecting Virus
Summoner Monk
Spellbook of Secrets
Reborn Tengu
Pantheism of the Monarchs
Pot of Avarice
Monster Gate

Source

NeoArkadia

NeoArkadia is the Number 2 in the Organization, and a mystery.