Mana Short

Tap all lands target player controls and that player loses all unspent mana.

Counterspell

Ankh of Mishra

Whenever a land enters, this artifact deals 2 damage to that land's controller.

Mana Web

Whenever a land an opponent controls is tapped for mana, tap all lands that player controls that could produce any type of mana that land could produce.

Mana Leak

Counter target spell unless its controller pays {3}.

Pillage

Destroy target artifact or land. It can't be regenerated.

Psychic Venom

Enchant land
Whenever enchanted land becomes tapped, this Aura deals 2 damage to that land's controller.

Island

Manabarbs

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Citadel of Pain

At the beginning of each player's end step, this enchantment deals X damage to that player, where X is the number of untapped lands they control.

Mana Vapors

Lands target player controls don't untap during their next untap step.

Cascade Bluffs

{T}: Add {C}.
{U/R}, {T}: Add {U}{U}, {U}{R}, or {R}{R}.

Rhystic Study

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Stone Rain

Exhaustion

Creatures and lands target opponent controls don't untap during their next untap step.

Mountain

Melek, Izzet Paragon

Play with the top card of your library revealed.
You may cast instant and sorcery spells from the top of your library.
Whenever you cast an instant or sorcery spell from your library, copy it. You may choose new targets for the copy.

Mystic Remora

Cumulative upkeep {1} (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.)
Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

Stormcarved Coast

This land enters tapped unless you control two or more other lands.
{T}: Add {U} or {R}.

Rishadan Port

Sulfur Falls

This land enters tapped unless you control an Island or a Mountain.
{T}: Add {U} or {R}.