Have

Mystic Snake

Flash
When Mystic Snake enters, counter target spell.

Mana Leak

Counter target spell unless its controller pays {3}.

Evacuation

Return all creatures to their owners' hands.

Hidden Gibbons

When an opponent casts an instant spell, if Hidden Gibbons is an enchantment, Hidden Gibbons becomes a 4/4 Ape creature.

Exploration

You may play an additional land on each of your turns.

Words of Wind

{1}: The next time you would draw a card this turn, each player returns a permanent they control to its owner's hand instead.

Standstill

When a player casts a spell, sacrifice Standstill. If you do, each of that player's opponents draws three cards.

Curfew

Each player returns a creature they control to its owner's hand.

Horn of Greed

Whenever a player plays a land, that player draws a card.

Burgeoning

Whenever an opponent plays a land, you may put a land card from your hand onto the battlefield.

Island

Gemstone Mine

Gemstone Mine enters with three mining counters on it.
{T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.

Tormod's Crypt

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Yavimaya Coast

{T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.

Forest

Daze

You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays {1}.

Worldly Tutor

Search your library for a creature card, reveal it, then shuffle and put the card on top.

Xantid Swarm

Flying
Whenever Xantid Swarm attacks, defending player can't cast spells this turn.

Chain of Vapor

Return target nonland permanent to its owner's hand. Then that permanent's controller may sacrifice a land of their choice. If the player does, they may copy this spell and may choose a new target for that copy.

Getting

Hibernation

Return all green permanents to their owners' hands.

Sleight of Hand

Look at the top two cards of your library. Put one of them into your hand and the other on the bottom of your library.

Arcane Laboratory

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

Sunken Hope

At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand.

Chill

Mana Breach

Whenever a player casts a spell, that player returns a land they control to its owner's hand.

Uktabi Orangutan

When Uktabi Orangutan enters, destroy target artifact.

Treva's Ruins

When Treva's Ruins enters, sacrifice it unless you return a non-Lair land you control to its owner's hand.
{T}: Add {G}, {W}, or {U}.