When Hopeless Nightmare enters, each opponent discards a card and loses 2 life.

When Hopeless Nightmare is put into a graveyard from the battlefield, scry 2.

: Sacrifice Hopeless Nightmare.

Whenever Horde Ambusher blocks, it deals 1 damage to you.

Morph—Reveal a red card in your hand. (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

When Horde Ambusher is turned face up, target creature can't block this turn.

Vigilance, trample, haste

: You may play target Elemental card from your graveyard without paying its mana cost.

Flying

Other Zombies you control have flying.

Whenever one or more Zombies you control deal combat damage to one or more of your opponents, you may draw cards equal to the number of opponents dealt damage this way. If you do, discard that many cards.

Flash

Flying, trample

Whenever you draw a card, you gain 1 life.

, Pay 1 life: Add one mana of any type that a land you control could produce.

, : You may put a land card from your hand onto the battlefield tapped.

, , Sacrifice Horizon of Progress: Draw a card.

Whenever you cast a Spirit or Arcane spell, regenerate target creature.

, , Sacrifice Horizon Spellbomb: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

When Horizon Spellbomb is put into a graveyard from the battlefield, you may pay . If you do, draw a card.

Ravenous (This creature enters with X +1/+1 counters on it. If X is 5 or more, draw a card when it enters.)

Endless Swarm — Whenever a land you control enters, you may pay . If you do, return Hormagaunt Horde from your graveyard to your hand.

When Horn of Gondor enters, create a 1/1 white Human Soldier creature token.

, : Create X 1/1 white Human Soldier creature tokens, where X is the number of Humans you control.

Whenever a player casts a spell, they may pay . If the player does, they draw a card at the beginning of the next end step.

Whenever two or more creatures you control attack a player, look at the top five cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

When Hornbash Mentor enters, put a trample counter on target non-Human creature you control.

, : Put a +1/+1 counter on each creature you control with trample.

Whenever Horned Cheetah deals damage, you gain that much life.

When Horned Kavu enters, return a red or green creature you control to its owner's hand.

All Sliver creatures have trample.

: Regenerate Horned Troll.

Flying, haste

First strike

Defender (This creature can't attack.)

Whenever Hornet Nest is dealt damage, create that many 1/1 green Insect creature tokens with flying and deathtouch. (Any amount of damage a creature with deathtouch deals to a creature is enough to destroy it.)

Hornet Sting deals 1 damage to any target.

Flying

Whenever a creature becomes the target of a spell or ability, destroy that creature.

Rampage 1 <I>(Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it beyond the first.)</I>

Lifelink

Whenever Horrid Shadowspinner attacks, you may draw cards equal to its power. If you do, discard that many cards.

Target creature you control deals damage equal to its power to target creature or planeswalker you don't control. If you control an Eldrazi, you gain 3 life.

Sacrifice a Swamp: Regenerate target black creature. (The next time that creature would be destroyed this turn, instead tap it, remove it from combat, and heal all damage on it.)

: Horror of the Dim gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

: Untap Horseshoe Crab.

When Hostage Taker enters, exile another target creature or artifact until Hostage Taker leaves the battlefield. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast that spell.

: Add .

, , Sacrifice a creature: Put a soul counter on Hostile Hostel. Then if there are three or more soul counters on it, remove those counters, transform it, then untap it. Activate only as a sorcery.

Haste (This creature can attack and as soon as it comes under your control.)

Enchant land

Enchanted land has ": Target creature can't block this turn."

Haste

If a spell you control would deal damage to an opponent, prevent that damage. Create a 3/1 red Elemental Shaman creature token with haste for each 1 damage prevented this way.

When Hostility is put into a graveyard from anywhere, shuffle it into its owner's library.

When Hot Pursuit enters, suspect target creature an opponent controls. As long as Hot Pursuit remains on the battlefield, that creature is also goaded.

At the beginning of combat on your turn, if two or more players have lost the game, gain control of all goaded and/or suspected creatures until end of turn. Untap them. They gain haste until end of turn.

Enchant land you control

Enchanted land has ": Prevent the next 1 damage that would be dealt to any target this turn."

Haste

Hotheaded Giant enters with two -1/-1 counters on it unless you've cast another red spell this turn.

Hotshot Mechanic crews Vehicles as though its power were 2 greater.

Delirium — Hound of the Farbogs has menace as long as there are four or more card types among cards in your graveyard. (A creature with menace can't be blocked except by two or more creatures.)

All creatures lose indestructible until end of turn. Hour of Devastation deals 5 damage to each creature and each non-Bolas planeswalker.

Exile target creature. If that creature was a God, its controller reveals their hand and exiles all cards from it with the same name as that creature.

Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle. Then if you control three or more Deserts, create two 2/2 black Zombie creature tokens.

This spell costs less to cast if there are ten or more nonland permanents on the battlefield.

Destroy all nonland permanents.

Survival — At the beginning of your second main phase, if House Cartographer is tapped, reveal cards from the top of your library until you reveal a land card. Put that card into your hand and the rest on the bottom of your library in a random order.

Defender, flying

Flying

When Hoverguard Sweepers enters, you may return up to two target creatures to their owners' hands.

Flying

Ward (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

: Put target card from a graveyard on the bottom of its owner's library.

Return CARDNAME to its owner's hand.

When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

Raid — If you attacked this turn, when you next cast an instant or sorcery spell this turn, copy that spell an additional time. You may choose new targets for the copy.

Create a 2/2 green Wolf creature token for each Forest you control.

Flying

When Howling Banshee enters, each player loses 3 life.