Flying

Whenever Hakka, Whispering Raven deals combat damage to a player, return it to its owner's hand, then scry 2.

Whenever you're dealt damage,

Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Trample

Whenever you cast a spell, if that spell was kicked, put a +1/+1 counter on Hallar, the Firefletcher, then Hallar deals damage equal to the number of +1/+1 counters on it to each opponent.

: Prevent the next 2 damage that would be dealt to any target this turn.

Threshold — : Prevent the next 4 damage that would be dealt to any target this turn. Activate only if seven or more cards are in your graveyard.

Equipped creature gets +2/+0.

Whenever equipped creature deals combat damage to a player, you may destroy target Equipment that player controls.

Equip

: Hammerfist Giant deals 4 damage to each creature without flying and each player.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Whenever Hapatra, Vizier of Poisons deals combat damage to a player, you may put a -1/-1 counter on target creature.

Whenever you put one or more -1/-1 counters on a creature, create a 1/1 green Snake creature token with deathtouch.

Flying

: Harbinger of the Hunt deals 1 damage to each creature without flying.

: Harbinger of the Hunt deals 1 damage to each other creature with flying.

Prevent all combat damage that would be dealt this turn by attacking creatures.

Choose target creature. You get (three energy counters), then you may pay any amount of . Harnessed Lightning deals that much damage to that creature.

, : Harpoon Sniper deals X damage to target attacking or blocking creature, where X is the number of Merfolk you control.

Cast this spell only during the declare attackers step and only if you've been attacked this step.

This turn, whenever an attacking creature deals combat damage to you, it deals that much damage to its controller.

Harsh Sustenance deals X damage to any target and you gain X life, where X is the number of creatures you control.

As an additional cost to cast this spell, exile X cards from your graveyard.

Harvest Pyre deals X damage to target creature.

Whenever Hasran Ogress attacks, it deals 3 damage to you unless you pay .

Wither (This deals damage to creatures in the form of -1/-1 counters.)

, : Hateflayer deals damage equal to its power to any target. ( is the untap symbol.)

As an additional cost to cast this spell, exile X creature cards from your graveyard.

Haunting Misery deals X damage to target player or planeswalker.

Whenever Havengul Vampire deals combat damage to a player, put a +1/+1 counter on it.

Whenever another creature dies, put a +1/+1 counter on Havengul Vampire.

Whenever you sacrifice a permanent, Havoc Jester deals 1 damage to any target.

, : The next X damage that would be dealt this turn to target white creature you control is dealt to Hazduhr the Abbot instead.

Prevent all combat damage that would be dealt this turn.

Cycling (, Discard this card: Draw a card.)

You and target opponent play Seven Questions with the top card of that player's library. If you win, prevent all damage that would be dealt this turn by a source of your choice. (To play Seven Questions, that player looks at the card, then you ask up to six yes-or-no questions about the card that they answer truthfully. You guess the card's name—that's question seven—then the player reveals the card.)

Flying

Hellbent — Whenever Headless Specter deals combat damage to a player, if you have no cards in hand, that player discards a card at random.

Equipped creature gets +0/+2 and has ": Prevent the next 1 damage that would be dealt to any target this turn."

: Attach Healer's Headdress to target creature you control.

Equip (: Attach to target creature you control. Equip only as a sorcery.)

Choose one —

• Target player gains 3 life.

• Prevent the next 3 damage that would be dealt to any target this turn.

Cumulative upkeep (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.)

When a player doesn't pay Heart of Bogardan's cumulative upkeep, Heart of Bogardan deals X damage to target player or planeswalker and each creature that player or that planeswalker's controller controls, where X is twice the number of age counters on Heart of Bogardan minus 2.

As an additional cost to cast this spell, sacrifice a creature or planeswalker.

Heartfire deals 4 damage to any target.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

, Sacrifice Heartfire Immolator: It deals damage equal to its power to target creature or planeswalker.

Heartflame Slash deals 3 damage to any target. (Then exile this card. You may cast the creature later from exile.)

: Heartless Hidetsugu deals damage to each player equal to half that player's life total, rounded down.

When Heart-Piercer Manticore enters, you may sacrifice another creature. When you do, Heart-Piercer Manticore deals damage equal to that creature's power to any target.

Embalm (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Manticore with no mana cost. Embalm only as a sorcery.)

Whenever a creature blocks, Heat of Battle deals 1 damage to that creature's controller.

This spell can't be countered. (This includes by the ward ability.)

Heated Debate deals 4 damage to target creature or planeswalker.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)

I, II — Investigate.

III — Heaven Sent deals 1 damage to each opponent. Then if an opponent has 0 or less life, draw seven cards. Otherwise, exile Heaven Sent and you may cast it this turn.

: Heavy Ballista deals 2 damage to target attacking or blocking creature.

When Hecatomb enters, sacrifice Hecatomb unless you sacrifice four creatures.

Tap an untapped Swamp you control: Hecatomb deals 1 damage to any target.

Whenever an artifact you control enters, Hedron Detonator deals 1 damage to target opponent.

, Sacrifice two artifacts: Exile the top card of your library. You may play that card this turn.

Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)

Whenever Heirs of Stromkirk deals combat damage to a player, put a +1/+1 counter on it.

Hell to Pay deals X damage to target creature. Create a number of tapped Treasure tokens equal to the amount of excess damage dealt to that creature this way.

Destroy all nonblack creatures. Hellfire deals X plus 3 damage to you, where X is the number of creatures that died this way.

Unleash (You may have this creature enter with a +1/+1 counter on it. It can't block as long as it has a +1/+1 counter on it.)

, Sacrifice Hellhole Flailer: Hellhole Flailer deals damage equal to its power to target player or planeswalker.

Until end of turn, permanents your opponents control gain "When this permanent deals damage to the player who cast Hellish Rebuke, sacrifice this permanent. You lose 2 life."

Flying

Whenever Hellkite Whelp attacks, it deals 1 damage to target creature defending player controls.

Enchant creature

As long as enchanted creature is blue, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, draw a card."

As long as enchanted creature is black, it gets +1/+1 and has "Whenever this creature deals damage to an opponent, that player discards a card."

Flying

When Herald of Vengeance enters the battlefield, destroy each permanent you don't control that has the same name as a permanent that dealt damage to you last turn.

Enchant creature

Enchanted creature has ": This creature deals 1 damage to any target."

Hexgold Slash deals 2 damage to target creature. If that creature has toxic, Hexgold Slash deals 4 damage to that creature instead.

Put a card from your hand on top of your library: Prevent all damage that would be dealt by target instant or sorcery spell this turn.