mtg.wtf

If you would draw a card while your library has no cards in it, you win the game instead.
[+1]: Target player mills two cards. Draw a card.
[–8]: Draw seven cards. Then if your library has no cards in it, you win the game.

[+2]: Look at the top card of target player's library. You may put that card on the bottom of that player's library.
[0]: Draw three cards, then put two cards from your hand on top of your library in any order.
[–1]: Return target creature to its owner's hand.
[–12]: Exile all cards from target player's library, then that player shuffles their hand into their library.

Whenever Jackal Pup is dealt damage, it deals that much damage to you.

When Jaddi Lifestrider enters the battlefield, you may tap any number of untapped creatures you control. You gain 2 life for each creature tapped this way.

{2}{G}: Create a 1/1 green Saproling creature token.

Whenever Jagged Poppet is dealt damage, discard that many cards.
Hellbent — Whenever Jagged Poppet deals combat damage to a player, if you have no cards in hand, that player discards cards equal to the damage.

Jagged-Scar Archers's power and toughness are each equal to the number of Elves you control.
{T}: Jagged-Scar Archers deals damage equal to its power to target creature with flying.

Return target permanent card in an opponent's graveyard to the battlefield under their control. When that permanent enters the battlefield, return up to one target permanent card with equal or lesser mana value from your graveyard to the battlefield.

{2}, {T}: Draw a card, then discard a card.

{T}: Add {C}{C}. Spend this mana only to activate abilities.

Trample
Whenever you cast a historic spell, Jamie McCrimmon gets +X/+X until end of turn, where X is that spell's mana value.
Doctor's companion

Whenever a creature you control dies, put two eyeball counters on Jar of Eyeballs.
{3}, {T}, Remove all eyeball counters from Jar of Eyeballs: Look at the top X cards of your library, where X is the number of eyeball counters removed this way. Put one of them into your hand and the rest on the bottom of your library in any order.

Jarad, Golgari Lich Lord gets +1/+1 for each creature card in your graveyard.
{1}{B}{G}, Sacrifice another creature: Each opponent loses life equal to the sacrificed creature's power.
Sacrifice a Swamp and a Forest: Return Jarad from your graveyard to your hand.

[+1]: Create a 3/3 Kavu creature token with trample that's all colors.
[–3]: Choose up to two target creatures. For each of them, put a number of +1/+1 counters on it equal to the number of colors it is.
[–6]: Return target multicolored card from your graveyard to your hand. If that card was all colors, draw a card and create two Treasure tokens.
Jared Carthalion can be your commander.

Whenever Jareth, Leonine Titan blocks, it gets +7/+7 until end of turn.
{W}: Jareth gains protection from the color of your choice until end of turn.

{T}: Add {G}{W}. Spend this mana only to cast creature spells with no abilities.
Creatures you control with no abilities can't be blocked by creatures with abilities.

Whenever a Zombie or Mutant you control dies, if its power was different from its base power, draw a card.
Come Fly With Me — {2}, Sacrifice a creature: Put a +1/+1 counter on target creature you control. It gains flying until end of turn.

Reach
{T}, Tap an untapped creature you control: Add one mana of any color.

Jaws of Stone deals X damage divided as you choose among any number of targets, where X is the number of Mountains you control as you cast this spell.

[+1]: Add {R}{R}{R}. Spend this mana only to cast instant or sorcery spells.
[+1]: Discard up to three cards, then draw that many cards.
[–8]: You get an emblem with "You may cast instant and sorcery spells from your graveyard. If a spell cast this way would be put into your graveyard, exile it instead."

{R}, {T}, Discard a card: Destroy target blue permanent.
{1}{R}, {T}, Discard a card: Jaya Ballard, Task Mage deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.
{5}{R}{R}, {T}, Discard a card: Jaya Ballard deals 6 damage to each creature and each player.

Jaya's Immolating Inferno deals X damage to each of up to three targets.

If another red source you control would deal damage to a permanent or player, it deals that much damage plus 1 to that permanent or player instead.
[–2]: Jaya, Venerated Firemage deals 2 damage to any target.

{4}, {T}: Draw a card.

First strike
{3}{W}{W}: Attacking creatures you control get +X/+X until end of turn, where X is the number of attacking creatures.