The List

Instant

X can't be 0.
Target spell's controller exiles it with X delay counters on it.
At the beginning of each of that player's upkeeps, if that card is exiled, remove a delay counter from it. If the card has no delay counters on it, the player puts it onto the stack as a copy of the original spell.

Ertai's Meddling

Choose one —
• Target player draws a card at the beginning of the next turn's upkeep.
• Target creature gains flying until end of turn.
• Target creature an opponent controls phases out. (While it's phased out, it's treated as though it doesn't exist. It phases in before its controller untaps during their next untap step.)

Sapphire Charm

Creature — Wraith

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
{B}: This creature gets +1/+0 until end of turn.

Dirtwater Wraith

Sorcery

Mind Rot

Duel Decks: Venser vs. Koth

Creature — Merfolk Soldier

Whenever this creature attacks and isn't blocked, look at the top card of defending player's library. You may put that card on the bottom of that player's library.

Coral Fighters

Starter 1999

Devastation

Classic Sixth Edition

Creature — Human Assassin

{B}, {T}: Tap target creature. This creature deals damage equal to its power to that creature.

Abyssal Hunter

Creature — Treefolk

Redwood Treefolk

Artifact

{T}: Look at the top card of target player's library. If it's a nonland card, you may pay 2 life. If you do, put it into that player's graveyard.

Wand of Denial

Tempest

Enchantment — Aura

Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature has flying. (It can't be blocked except by creatures with flying or reach.)
{U}: Return this Aura to its owner's hand.

Shimmering Wings

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Spell Blast

Creature — Elf Ranger

{T}: You may put a land card from your hand onto the battlefield. Activate only as a sorcery.

Skyshroud Ranger

Weatherlight

Enchantment

Cumulative upkeep—Draw a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
At the beginning of your end step, sacrifice a land and discard your hand.

Psychic Vortex

{3}, {T}: Until end of turn, you may cast instant and sorcery spells from the top of your graveyard. If a spell cast this way would be put into a graveyard, exile it instead.

Bösium Strip

Oversized League Prizes

{1}{W}: The next time a black or red source of your choice would deal damage to you this turn, prevent that damage.

Greater Realm of Preservation

Portal

Creature — Zombie

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Bog Raiders

Creature — Beast

When this creature dies, put it on top of its owner's library.

Undying Beast

Creature — Snake

When this creature dies, destroy target land.

Fire Snake

You gain 1 life for each Forest on the battlefield.

Fruition

Fifth Edition

Enchant creature
At the beginning of your upkeep, sacrifice this Aura unless you pay {W}{W}.
Enchanted creature can't attack or block, and its activated abilities with {T} in their costs can't be activated.

Serra Bestiary

Creature — Human

Whenever this creature attacks, it gets +1/-2 until end of turn.
{1}{R}{R}, {T}: Target creature gains mountainwalk until end of turn. (It can't be blocked as long as defending player controls a Mountain.)

Cave People

{3}, Discard a card at random: Target creature gets +2/+2 until end of turn.

Coral Helm

Visions

Return this enchantment to its owner's hand: Prevent all combat damage that would be dealt by target unblocked creature this turn.

Gossamer Chains

Creature — Human Soldier

Scalebane's Elite

Mirage

Creature — Human Cleric

{T}: Prevent the next 1 damage that would be dealt to any target this turn.

Femeref Healer

Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)

Merfolk Raiders

Creature — Merfolk Wizard

When this creature dies, you may pay {1}{U}. If you do, draw a card.

Merfolk Seer

Choose one —
• Destroy target Wall.
• Chaos Charm deals 1 damage to target creature.
• Target creature gains haste until end of turn.

Chaos Charm

World Enchantment

Creatures with flying can block only creatures with flying.
Creatures without flying have reach. (They can block creatures with flying.)