mtg.wtf

You may look at the top card of your library any time.
You may cast Merfolk spells from the top of your library.
Whenever you cast a Merfolk spell, you may pay {1}. If you do, create a 1/1 blue Merfolk creature token.

Vigilance
Whenever an opponent casts a spell, if no mana was spent to cast it, counter that spell.
Sacrifice Boromir: Creatures you control gain indestructible until end of turn. The Ring tempts you.

This artifact enters tapped.
{X}, {T}, Sacrifice this artifact: Add X mana in any combination of colors.
When this artifact is put into a graveyard from the battlefield, draw a card.

Melee
If a creature you control attacking causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

At the beginning of your upkeep, Rumbling Slum Avatar deals 1 damage to each opponent.

Flying, haste
Whenever a creature you control with flying and/or haste attacks, you get 20% cooler. (You start at 0% coolness.)
Sonic Rainboom — {T}: If you're at least 100% cool, add {W}{U}{B}{R}{G}, draw a card, and reset your coolness.

Whenever you gain life, you may pay {1}{W}. If you do, put a +1/+1 counter on target creature for each 1 life you gained.

Flying
{1}{R}: This creature gets +1/+0 until end of turn.
Whenever this creature deals combat damage to a player, you may have it deal that much damage to target creature that player controls.

{1}{R}: This creature gets +1/+0 until end of turn.
When this creature dies, incubate X, where X is its power.

Each creature you control that's a Wolf or a Werewolf enters with an additional +1/+1 counter on it.
[–2]: Create a 2/2 green Wolf creature token.

When this creature enters, you gain life equal to its power.
Eternalize—{2}{W}{W}, Discard a card.

Destroy all artifacts and enchantments.

{W}{U}{B}{R}{G}: This creature gets +2/+2 and gains fear until end of turn. Target creature gets -2/-2 until end of turn. Activate only during your turn.

Choose one —
• Target nonsnow permanent becomes snow until end of turn.
• Target snow permanent isn't snow until end of turn.
Draw a card at the beginning of the next turn's upkeep.

This creature has trample as long as it has a +1/+1 counter on it.

Gift a Food
Destroy target creature. If the gift wasn't promised, you lose 2 life.

Whenever a Knight you control attacks, each opponent loses 1 life and you gain 1 life.
{6}{W}{B}, Sacrifice this enchantment: Return all Knight creature cards from your graveyard to the battlefield.

This creature enters with X +1/+1 counters on it.
Whenever one or more +1/+1 counters are put on another non-Hydra creature you control, put a +1/+1 counter on this creature.

Creatures can't attack planeswalkers you control unless their controller pays {1} for each creature they control that's attacking a planeswalker you control.
{4}{W}{W}, Exile this card from your graveyard: Return target planeswalker card from your graveyard to the battlefield.

Whenever a creature you control attacks alone, it gets +1/+0 and gains deathtouch until end of turn.

Flying; swampwalk

All Slivers have "Sacrifice this permanent: Add {B}{B}."

{1}, {T}, Tap an untapped creature you control: Create a 1/1 green Saproling creature token.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast a Cleric, Rogue, Warrior, or Wizard spell or to activate an ability of a Cleric, Rogue, Warrior, or Wizard.