Counter target activated or triggered ability. (Mana abilities can't be targeted.)

: Add to your mana pool.
, Sacrifice Wasteland: Destroy target nonbasic land.

, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card and put it onto the battlefield. Then shuffle your library.

Lightning Bolt deals 3 damage to target creature or player.

You may pay 1 life and exile a blue card from your hand rather than pay Force of Will's mana cost.
Counter target spell.

You may return an Island you control to its owner's hand rather than pay Daze's mana cost.
Counter target spell unless its controller pays .

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

Shroud
Threshold - Nimble Mongoose gets +2/+2 as long as seven or more cards are in your graveyard.

CLICK TO TRANSFORM

At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.

Flying

Look at the top three cards of your library, then put them back in any order. You may shuffle your library.
Draw a card.

, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card and put it onto the battlefield. Then shuffle your library.

Tarmogoyf's power is equal to the number of card types among cards in all graveyards and its toughness is equal to that number plus 1. (Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types.)

Counter target spell with converted mana cost 2.

Forked Bolt deals 2 damage divided as you choose among one or two target creature and/or players.

, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card and put it onto the battlefield. Then shuffle your library.

At the beginning of your draw step, you may draw two additional cards. If you do, choose two cards in your hand drawn this turn. For each of those cards, pay 4 life or put the card on top of your library.

Search your library for a green creature card with converted mana cost X or less and put it onto the battlefield, then shuffle your library. Shuffle Green Sun's Zenith into its owner's library.

Flash
Split second
White creatures get +1/-1.

Destroy target artifact.
Flashback

Counter target noncreature spell unless its controller pays .

If an opponent controls a Forest and you control an Island, you may cast Submerge without paying its mana cost.
Put target creature on top of its owner's library.

( can be paid with either or 2 life.)
Choose target card in a graveyard other than a basic land card. Search its owner's graveyard, hand, and library for any number of cards with the same name as that card and exile them. Then that player shuffles his or her library.