Hushwing Gryff

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

Eidolon of Rhetoric

Each player can't cast more than one spell each turn.

Winter Orb

As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.

Urborg, Tomb of Yawgmoth

Each land is a Swamp in addition to its other land types.

Kormus Bell

All Swamps are 1/1 black creatures that are still lands.

Torpor Orb

Creatures entering don't cause abilities to trigger.

Ethersworn Canonist

Each player who has cast a nonartifact spell this turn can't cast additional nonartifact spells.

Possessed Portal

If a player would draw a card, that player skips that draw instead.
At the beginning of each end step, each player sacrifices a permanent unless they discard a card.

Archon of Emeria

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

Elesh Norn, Grand Cenobite

Vigilance
Other creatures you control get +2/+2.
Creatures your opponents control get -2/-2.