Counter target spell unless its controller pays .

Return target creature to its owner's hand. Its controller loses 1 life.

Target player puts the top two cards of his or her library into his or her graveyard.
Draw a card.

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

Flash
When Snapcaster Mage enters the battlefield, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost.

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

Hexproof
Whenever Geist of Saint Traft attacks, put a 4/4 white Angel creature token with flying onto the battlefield tapped and attacking. Exile that token at the end of combat.

Seachrome Coast enters the battlefield tapped unless you control two or fewer other lands.
: Add or to your mana pool.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island.
: Add or to your mana pool.

: Add to your mana pool.
, , Exile a creature card from your graveyard : put 1/1 white Spirit creature token with flying onto the battlefield.

( can be paid with either or 2 life.)
Gut Shot deals 1 damage to target creature or player.

Equipped creature has first strike and gets +X/+0 where X is the number of instant and sorcery cards in your graveyard.
Equip

Flying
When Dungeon Geists enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's untap step for as long as you control Dungeon Geists.

When Oblivion Ring enters the battlefield, exile another target nonland permanent.
When Oblivion Ring leaves the battlefield, return the exiled card to the battlefield under its owner's control.

( can be paid with either or 2 life.)
Look at target player's hand.
Draw a card.

( can be paid with either or 2 life.)
Target creature gets +2/+2 until end of turn.

You may have Phantasmal Image enter the battlefield as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it gains "When this creature becomes the target of a spell or ability, sacrifice it."

( can be paid with either or 2 life.)
Counter target spell with converted mana cost 1.

Prevent the next X damage that would be dealt to you and/or permanents you control this turn. If damage is prevented this way, Divine Deflection deals that much damage to target creature or player.

Righteous Blow deals 2 damage to target attacking or blocking creature.

Counter target noncreature spell.

Destroy target enchantment. You gain 2 life.

If you have less life than an opponent, you gain 6 life. If you control fewer creatures than an opponent, put three 1/1 white Soldier creatures tokens onto the battlefield.

Destroy all creatures.