Moar Madness

|Imperfect Plane of Restricted Will||Spell Card|Spell||Field|||Pay 2000 life points. Banish all monsters in both players graveyard and all monsters currently on the field is treated as having 0 ATK. No monsters can attack directly, and effect damages to both players is treated as 0 as long as this card is on the field. When a monster is summoned or flipped face-up, halve its ATK and DEF and negate its effect if the effect will not summon a monster. All monsters must attack if able during the battle phase. If a player can summon a monster or activate an effect to summon a monster, they must summon it or activate the effect (extra deck monsters is not counted). When a monster is destroyed by battle, banish it, then the controller add 1 different monster from their banished pile to their hand. This card cannot be removed from the field by a spell/trap card and your opponent cannot activate another field spell card when this card is face-up.|

This feels like an extreme version of Black Garden. One could clear the field, get a strong monster out, then play this and GG. The opponent pretty much can't do anything but be forced to summon monsters and suicide them into your monsters.

ok, fix'd with moar madness