Library of Leng

You have no maximum hand size.
If an effect causes you to discard a card, discard it, but you may put it on top of your library instead of into your graveyard.

Helm of Chatzuk

{1}, {T}: Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

The Hive

{5}, {T}: Create a 1/1 colorless Insect artifact creature token with flying named Wasp. (It can't be blocked except by creatures with flying or reach.)

Cyclopean Tomb

{2}, {T}: Put a mire counter on target non-Swamp land. That land is a Swamp for as long as it has a mire counter on it. Activate only during your upkeep.
When Cyclopean Tomb is put into a graveyard from the battlefield, at the beginning of each of your upkeeps for the rest of the game, remove all mire counters from a land that a mire counter was put onto with Cyclopean Tomb but that a mire counter has not been removed from with Cyclopean Tomb.

Sol Ring

Soul Net

Whenever a creature dies, you may pay {1}. If you do, you gain 1 life.

Basalt Monolith

Basalt Monolith doesn't untap during your untap step.
{T}: Add {C}{C}{C}.
{3}: Untap Basalt Monolith.

Howling Mine

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

Swamp

Icy Manipulator

{1}, {T}: Tap target artifact, creature, or land.

Winter Orb

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

Dingus Egg

Whenever a land is put into a graveyard from the battlefield, Dingus Egg deals 2 damage to that land's controller.

Clockwork Beast

Clockwork Beast enters with seven +1/+0 counters on it.
At end of combat, if Clockwork Beast attacked or blocked this combat, remove a +1/+0 counter from it.
{X}, {T}: Put up to X +1/+0 counters on Clockwork Beast. This ability can't cause the total number of +1/+0 counters on Clockwork Beast to be greater than seven. Activate only during your upkeep.

Black Vise

As Black Vise enters, choose an opponent.
At the beginning of the chosen player's upkeep, Black Vise deals X damage to that player, where X is the number of cards in their hand minus 4.

Nevinyrral's Disk

Nevinyrral's Disk enters tapped.
{1}, {T}: Destroy all artifacts, creatures, and enchantments.

Forcefield

{1}: The next time an unblocked creature of your choice would deal combat damage to you this turn, prevent all but 1 of that damage.

Living Wall

Defender (This creature can't attack.)
{1}: Regenerate Living Wall.

Rod of Ruin

{3}, {T}: Rod of Ruin deals 1 damage to any target.

Kormus Bell

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

Juggernaut

Juggernaut attacks each combat if able.
Juggernaut can't be blocked by Walls.

Copper Tablet

At the beginning of each player's upkeep, Copper Tablet deals 1 damage to that player.

Jade Statue

{2}: Jade Statue becomes a 3/6 Golem artifact creature until end of combat. Activate only during combat.

Meekstone

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