The deck's landfall shenanigans can easily get out of hand, and WotC even included an infinite combo when making the deck (Yedora Grave Gardener + Sakura-Tribe Elder + Zimone)
Although Gressle has finally decided to sell it in 2023, he has seriously contemplated it several times over the last decade
It stops players from having more than two cards in their hand at the end of a turn, thus controlling their next move (or limiting their options, at least)
Sharkey, Tyrant of the Shire I actually really like Sharkey, Tyrant of the Shire, and I think it could lead to some very unique gameplay situations
Cost 1 Cards 3x Captain Hook, Forceful Duelist 3x Develop Your Brain 3x Fire The Cannons
(1) Neither player can declare attacks with monsters not in the center Main Monster Zones while this card is in the center Main Monster Zone