Drannith Magistrate

Your opponents can't cast spells from anywhere other than their hands.

Imposing Sovereign

Creatures your opponents control enter tapped.

During your turn, your opponents can't cast spells or activate abilities of artifacts, creatures, or enchantments.

Flash
Flying
Artifacts and creatures entering don't cause abilities to trigger.

Players can't search libraries. Any player may pay {2} for that player to ignore this effect until end of turn.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

First strike
Noncreature spells cost {1} more to cast.

Nonwhite creatures with power 3 or greater don't untap during their controllers' untap steps.

Flying
Whenever a permanent entering causes a triggered ability to trigger, counter that ability unless its controller pays {2}.

Nonartifact spells cost {1} more to cast.

Flying
Each player can't cast more than one spell each turn.
Nonbasic lands your opponents control enter tapped.

Creatures entering don't cause abilities to trigger.

Legendary creatures don't untap during their controllers' untap steps.
When Arena of the Ancients enters, tap all legendary creatures.

Each player can't draw more than one card each turn.

Flash
Flying
Creatures entering don't cause abilities to trigger.

Flying
Noncreature spells cost {1} more to cast.

Flash
If an opponent would draw two or more cards, instead you and that player each draw a card.