mtg.wtf

[+1]: Create a tapped Powerstone token.
[–1]: Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and the rest on the bottom of your library in a random order.
[–7]: You get an emblem with "Tap an untapped artifact you control: This emblem deals 1 damage to any target."

[+1]: Create a tapped Powerstone token.
[0]: Pay any amount of mana. Look at that many cards from the top of your library, then put one of those cards into your hand and the rest on the bottom of your library in a random order.
[–6]: You get an emblem with "Tap an untapped artifact you control: This emblem deals 1 damage to any target."

[+1]: Reveal the top two cards of your library. An opponent chooses one of them. Put that card into your hand and exile the other with a silver counter on it.
[–1]: Put a card you own with a silver counter on it from exile into your hand.
[–2]: Create a 0/0 colorless Construct artifact creature token with "This creature gets +1/+1 for each artifact you control."

Whenever Karn, Silver Golem blocks or becomes blocked, it gets -4/+4 until end of turn.
{1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Activated abilities of artifacts your opponents control can't be activated.
[+1]: Until your next turn, up to one target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value.
[–2]: You may reveal an artifact card you own from outside the game or choose a face-up artifact card you own in exile. Put that card into your hand.

Flying, haste
When Karrthus, Tyrant of Jund enters the battlefield, gain control of all Dragons, then untap all Dragons.
Other Dragon creatures you control have haste.

{G}{U}: Target creature can't be blocked this turn. If that creature is a Snake, it gets +2/+2 until end of turn.

Convoke
Flying, vigilance, haste
Whenever you cast another spell that has convoke, scry 2, then draw a card.

Each other planeswalker you control has the loyalty abilities of Kasmina, Enigma Sage.
[+2]: Scry 1.
[–X]: Create a 0/0 green and blue Fractal creature token. Put X +1/+1 counters on it.
[–8]: Search your library for an instant or sorcery card that shares a color with this planeswalker, exile that card, then shuffle. You may cast that card without paying its mana cost.

When Kathril, Aspect Warper enters the battlefield, put a flying counter on any creature you control if a creature card in your graveyard has flying. Repeat this process for first strike, double strike, deathtouch, hexproof, indestructible, lifelink, menace, reach, trample, and vigilance. Then put a +1/+1 counter on Kathril for each counter put on a creature this way.

Whenever you cast a Human spell, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

Whenever a creature you control that was turned face up this turn deals combat damage to a player, draw a card.
{T}: Turn target face-down attacking creature you control face up.

[+1]: Put a ghostform counter on up to one target nontoken creature. It gains "When this creature dies or is put into exile, return it to its owner's hand and create a 1/1 white Spirit creature token with flying."
[–3]: Exile target nonland permanent.
[–7]: You get an emblem with "At the beginning of your upkeep, you may cast a legendary spell from your hand, from your graveyard, or from among cards you own in exile without paying its mana cost."

[+1]: Creatures you control gain deathtouch until end of turn. Put a +1/+1 counter on up to one target creature token you control.
[–2]: Until end of turn, if one or more tokens would be created under your control, twice that many of those tokens are created instead.
[–6]: Exile all cards from all graveyards, then create a 1/1 white Spirit creature token with flying for each card exiled this way.

[0]: Exile Kaya, Ghost Assassin or up to one target creature. Return that card to the battlefield under its owner's control at the beginning of your next upkeep. You lose 2 life.
[–1]: Each opponent loses 2 life and you gain 2 life.
[–2]: Each opponent discards a card and you draw a card.

[+1]: Exile up to two target cards from a single graveyard. You gain 2 life if at least one creature card was exiled this way.
[–1]: Exile target nonland permanent with mana value 1 or less.
[–5]: Kaya, Orzhov Usurper deals damage to target player equal to the number of cards that player owns in exile and you gain that much life.

Whenever one or more creatures you control and/or creature cards in your graveyard are put into exile, you may choose a creature card from among them. Until end of turn, target token you control becomes a copy of it, except it has flying.
[+2]: Surveil 2, then exile a card from a graveyard.
[+1]: Create a 1/1 white and black Spirit creature token with flying.
[–2]: Exile target creature you control. For each other player, exile up to one target creature that player controls.

When Kayla's Kindling enters the battlefield, it deals 2 damage to any target.
At the beginning of your upkeep, draft a card from Kayla's Kindling's spellbook and exile it. Until end of turn, you may cast that card.

Flash
You may cast Secret Lair spells as though they had flash.
Secret Lair spells you cast cost {1} less to cast.

Flying, indestructible
Kefnet the Mindful can't attack or block unless you have seven or more cards in hand.
{3}{U}: Draw a card, then you may return a land you control to its owner's hand.

Flying
When Keiga, the Tide Star dies, gain control of target creature.

Double strike
Other creatures you control get +1/+0 for each Aura and Equipment attached to Kellan, the Fae-Blooded.

Flying, lifelink
Whenever you cast a spell from anywhere other than your hand, you may cast a permanent spell with equal or lesser mana value from your hand without paying its mana cost. If you don't, you may put a land card from your hand onto the battlefield.

Vigilance, haste
Kelsien, the Plague gets +1/+1 for each experience counter you have.
{T}: Kelsien deals 1 damage to target creature you don't control. When that creature dies this turn, you get an experience counter.

{R}: All creatures gain trample and haste until end of turn.
{1}{G}: Put a +1/+1 counter on target creature.
{2}{W}: Target player gains 5 life.
{3}{U}: Target player draws a card.
{4}{B}: Put target creature card from a graveyard onto the battlefield under its owner's control.