mtg.wtf

Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.

Choose a nonland card name and a number greater than 0. Target player reveals their library. If that library contains exactly the chosen number of cards with the chosen name, Mindblaze deals 8 damage to that player. Then that player shuffles.

If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost.
Exile any number of target spells.

Whenever an opponent loses life, that player mills that many cards.

You draw two cards and target opponent discards two cards.

Players can't search libraries.

Whenever you cast a spell, put the cards in your hand on the bottom of your library in any order, then draw that many cards.

Join forces — Starting with you, each player may pay any amount of mana. Each player draws X cards, where X is the total amount of mana paid this way.

{4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn.

Flash
At the beginning of your upkeep, put an oil counter on Mindsplice Apparatus.
Instant and sorcery spells you cast cost {1} less to cast for each oil counter on Mindsplice Apparatus.

Target player discards three cards.
Suspend 4—{B}

Counter target spell unless its controller pays {6}.

At the beginning of your upkeep, draw a card if you had no cards in hand at the beginning of this turn. If you had a card in hand, Mindstorm Crown deals 1 damage to you.

Counter target spell unless its controller pays {X}. Mindswipe deals X damage to that spell's controller.

If it's your turn, you may sacrifice a Mountain rather than pay this spell's mana cost.
Mine Collapse deals 5 damage to target creature or planeswalker.

Return target artifact or enchantment card from a graveyard to its owner's hand.
Conspire

When Mine, Mine, Mine! enters the battlefield, each player puts their library into their hand.
Players have no maximum hand size and don't lose the game for drawing from an empty library.
Each player can't cast more than one spell each turn.
When Mine, Mine, Mine! leaves the battlefield, each player shuffles their hand and graveyard into their library.

Mines of Moria enters the battlefield tapped unless you control a legendary creature.
{T}: Add {R}.
{3}{R}, {T}, Exile three cards from your graveyard: Create two Treasure tokens.

Enchant nonland permanent
Enchanted permanent is a Treasure artifact with "{T}, Sacrifice this artifact: Add one mana of any color," and it loses all other abilities.

Whenever a nontoken creature enters the battlefield under your control, you may pay {2}. If you do, create a token that's a copy of that creature, except it has haste and "At the beginning of the end step, sacrifice this permanent."

Flash
Enchant creature
When enchanted creature dies, return that card to the battlefield under your control.

You draw X cards and you lose X life, where X is the number of creatures you control.

Counter target spell with mana value 1 or less.

When Minsc & Boo, Timeless Heroes enters the battlefield and at the beginning of your upkeep, you may create Boo, a legendary 1/1 red Hamster creature token with trample and haste.
[+1]: Put three +1/+1 counters on up to one target creature with trample or haste.
[–2]: Sacrifice a creature. When you do, Minsc & Boo, Timeless Heroes deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards.
Minsc & Boo, Timeless Heroes can be your commander.

When Minsc & Boo, Timeless Heroes enters the battlefield and at the beginning of your upkeep, if you don't control a creature named Boo, create Boo, a legendary 1/1 red Hamster creature token with trample and haste.
[+1]: Put three +1/+1 counters on up to one target creature with trample or haste.
[–2]: Sacrifice a creature. When you do, Minsc & Boo, Timeless Heroes deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards.