Cocoon

Enchant creature you control
When Cocoon enters the battlefield, tap enchanted creature and put three pupa counters on Cocoon.
Enchanted creature doesn’t untap during your untap step if Cocoon has a pupa counter on it.
At the beginning of your upkeep, remove a pupa counter from Cocoon. If you can’t, sacrifice it, put a +1/+1 counter on enchanted creature, and that creature gains flying.

Johan

At the beginning of combat on your turn, you may have Johan gain “Johan can’t attack” until end of combat. If you do, attacking doesn’t cause creatures you control to tap this combat if Johan is untapped.

Serpent Generator

, : Create a 1/1 colorless Snake artifact creature token. It has “Whenever this creature deals damage to a player, that player gets a poison counter.” (A player with ten or more poison counters loses the game.)

Nacre Talisman

Whenever a player casts a white spell, you may pay . If you do, untap target permanent.

Force Void

Counter target spell unless its controller pays .
Draw a card at the beginning of the next turn’s upkeep.

Polar Kraken

Trample
Polar Kraken enters the battlefield tapped.
Cumulative upkeep—Sacrifice a land. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

Balduvian Conjurer

: Target snow land becomes a 2/2 creature until end of turn. It’s still a land.

Necropotence

Skip your draw step.
Whenever you discard a card, exile that card from your graveyard.
Pay 1 life: Exile the top card of your library face down. Put that card into your hand at the beginning of your next end step.

Glaciers

At the beginning of your upkeep, sacrifice Glaciers unless you pay .
All Mountains are Plains.

Mind Ravel

Target player discards a card.
Draw a card at the beginning of the next turn’s upkeep.

Heal

Prevent the next 1 damage that would be dealt to any target this turn.
Draw a card at the beginning of the next turn’s upkeep.

Naked Singularity

Cumulative upkeep (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
If tapped for mana, Plains produce , Islands produce , Swamps produce , Mountains produce , and Forests produce instead of any other type.

Stench of Evil

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land’s controller unless they pay .

Thoughtleech

Whenever an Island an opponent controls becomes tapped, you may gain 1 life.

Freyalise’s Winds

Whenever a permanent becomes tapped, put a wind counter on it.
If a permanent with a wind counter on it would untap during its controller’s untap step, remove all wind counters from it instead.

Nevinyrral’s Disk

Nevinyrral’s Disk enters the battlefield tapped.
, : Destroy all artifacts, creatures, and enchantments.

Mind Bomb

Each player may discard up to three cards. Mind Bomb deals damage to each player equal to 3 minus the number of cards they discarded this way.

Flying Carpet

, : Target creature gains flying until end of turn.

Tetravus

Flying
Tetravus enters the battlefield with three +1/+1 counters on it.
At the beginning of your upkeep, you may remove any number of +1/+1 counters from Tetravus. If you do, create that many 1/1 colorless Tetravite artifact creature tokens. They each have flying and “This creature can’t be enchanted.”
At the beginning of your upkeep, you may exile any number of tokens created with Tetravus. If you do, put that many +1/+1 counters on Tetravus.

Wooden Sphere

Whenever a player casts a green spell, you may pay . If you do, you gain 1 life.

Helm of Chatzuk

, : 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.)