Lumbering Satyr

All creatures have forestwalk. (They can't be blocked as long as defending player controls a Forest.)

Urborg, Tomb of Yawgmoth

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

Revelation

Night of Souls' Betrayal

Bedlam

Howling Mine

At the beginning of each player's draw step, if this artifact is untapped, that player draws an additional card.

Concordant Crossroads

Absolute Grace

All creatures have protection from black.

Forsaken Wastes

Players can't gain life.
At the beginning of each player's upkeep, that player loses 1 life.
Whenever this enchantment becomes the target of a spell, that spell's controller loses 5 life.

Avatar of Slaughter

All creatures have double strike and attack each combat if able.

Angel's Trumpet

All creatures have vigilance.
At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.

Blood Moon

Mass Hysteria

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.