When Herbology Instructor enters, you gain 3 life.

: Transform Herbology Instructor. Activate only as a sorcery. ( can be paid with either or 2 life.)

Whenever another creature you control enters, Herd Gnarr gets +2/+2 until end of turn.

Emerge (You may cast this spell by sacrificing a creature and paying the emerge cost reduced by that creature's mana value.)

When you cast this spell, you may exile your hand. If you do, draw three cards.

Flying

Each creature spell you cast has emerge. The emerge cost is equal to its mana cost.

, : Reveal cards from the top of your library until you reveal a basic land card. Put that card into your hand and all other cards revealed this way into your graveyard.

Vigilance

: Hermitic Nautilus gets +3/-3 until end of turn.

Whenever one or more cards are put into exile from your hand or a spell or ability you control exiles one or more permanents from the battlefield, put that many +1/+1 counters on Hero of Bretagard.

As long as Hero of Bretagard has five or more counters on it, it has flying and is an Angel in addition to its other types.

As long as Hero of Bretagard has ten or more counters on it, it has indestructible and is a God in addition to its other types.

Aura spells you cast cost less to cast.

Heroic — Whenever you cast a spell that targets Hero of Iroas, put a +1/+1 counter on Hero of Iroas.

Haste

Battle cry (Whenever this creature attacks, each other attacking creature gets +1/+0 until end of turn.)

Whenever Hero of Oxid Ridge attacks, creatures with power 1 or less can't block this turn.

When Hero of the Dunes enters, return target artifact or creature card with mana value 3 or less from your graveyard to the battlefield.

Creatures you control with mana value 3 or less get +1/+0.

When Hero of the Nyxborn enters, create a 1/1 white Human Soldier creature token.

Whenever you cast a spell that targets Hero of the Nyxborn, creatures you control get +1/+0 until end of turn.

Flying

Whenever you cast a spell that targets Hero of the Winds, creatures you control get +1/+0 until end of turn.

When Heroes of the Revel enters, create a 1/1 red Satyr creature token with "This creature can't block."

Whenever you cast a spell that targets Heroes of the Revel, creatures you control get +1/+0 until end of turn.

Vigilance

Whenever another Human you control enters, put a +1/+1 counter on Heronblade Elite.

: Add X mana of any one color, where X is Heronblade Elite's power.

Flash

Lifelink

When Heron's Grace Champion enters, other Humans you control get +1/+1 and gain lifelink until end of turn.

: Remove up to X counters from target permanent. For each counter removed this way, Hex Parasite gets +1/+0 until end of turn. ( can be paid with either or 2 life.)

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

Enlist (As this creature attacks, you may tap a nonattacking creature you control without summoning sickness. When you do, add its power to this creature's until end of turn.)

When Hexgold Slith enters, you get (two energy counters).

Whenever Hexgold Slith attacks, you may pay . If you do, it gains first strike until end of turn.

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

All Slivers have "Pay 2 life: Return this permanent to its owner's hand."

Revolt — When Hidden Herbalists enters, if a permanent you controlled left the battlefield this turn, add .

Menace (This creature can't be blocked except by two or more creatures.)

When this creature transforms into Hideous Fleshwheeler, put target permanent card with mana value 2 or less from a graveyard onto the battlefield under your control.

Flying

When Hidetsugu and Kairi enters, draw three cards, then put two cards from your hand on top of your library in any order.

When Hidetsugu and Kairi dies, exile the top card of your library. Target opponent loses life equal to its mana value. If it's an instant or sorcery card, you may cast it without paying its mana cost.

Frenzied Metabolism — As an additional cost to cast this spell, you may remove any number of +1/+1 counters from among creatures you control. This spell costs less to cast for each counter removed this way.

Vigilance, reach, ward

Titanic — Hierophant Bio-Titan can't be blocked by creatures with power 2 or less.

Whenever High Priest of Penance is dealt damage, you may destroy target nonland permanent.

All targeted spells and abilities cost less and have their targets chosen randomly.

Whenever Highland Berserker or another Ally you control enters, you may have Ally creatures you control gain first strike until end of turn.

Reach (This creature can block creatures with flying.)

Fabricate 1 (When this creature enters, put a +1/+1 counter on it or create a 1/1 colorless Servo artifact creature token.)

Defender

When Hightide Hermit enters, you get (four energy counters).

Pay : Hightide Hermit can attack this turn as though it didn't have defender.

Ninjutsu (, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)

Whenever Higure, the Still Wind deals combat damage to a player, you may search your library for a Ninja card, reveal it, put it into your hand, then shuffle.

: Target Ninja creature can't be blocked this turn.

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

When Hinterland Chef enters the battlefield, draft a card from Hinterland Chef's spellbook. It perpetually becomes a Food artifact in addition to its other types and perpetually gains ", , Sacrifice this creature: You gain 3 life."

At the beginning of each upkeep, if no spells were cast last turn, transform Hinterland Hermit.

Hinterland Scourge must be blocked if able.

At the beginning of each upkeep, if a player cast two or more spells last turn, transform Hinterland Scourge.

Flash (You may cast this spell any time you could cast an instant.)

When Hired Giant enters, each other player may search their library for a land card and put that card onto the battlefield. Then each player who searched their library this way shuffles.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Hired Muscle.

At the beginning of the end step, if there are two or more ki counters on Hired Muscle, you may flip it.

Defender

, : Target opponent loses 2 life, then reveals a card at random from their hand.

You may choose not to untap Hisoka's Guard during your untap step.

, : Target creature you control other than Hisoka's Guard has shroud for as long as Hisoka's Guard remains tapped. (It can't be the target of spells or abilities.)

Whenever Historian of Zhalfir attacks, if you control a Teferi planeswalker, draw a card.

Whenever Hiveheart Shaman attacks, you may search your library for a basic land card that doesn't share a land type with a land you control, put that card onto the battlefield, then shuffle.

: Create a 1/1 green Insect creature token. Put X +1/+1 counters on it, where X is the number of basic land types among lands you control. Activate only as a sorcery.

You may choose not to untap Hivis of the Scale during your untap step.

: Gain control of target Dragon for as long as you control Hivis and Hivis remains tapped.

: Hoar Shade gets +1/+1 until end of turn.

Convoke

Flying

When Hoarding Broodlord enters, search your library for a card, exile it face down, then shuffle. For as long as that card remains exiled, you may play it.

Spells you cast from exile have convoke.

Whenever Hoarding Ogre attacks, roll a d20.

1–9 | Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

10–19 | Create two Treasure tokens.

20 | Create three Treasure tokens.

Flying

: Destroy target artifact. Hoard-Smelter Dragon gets +X/+0 until end of turn, where X is that artifact's mana value.

Deathtouch

When Hobbling Zombie dies, create a 2/2 black Zombie creature token with decayed. (It can't block. When it attacks, sacrifice it at end of combat.)

Pack tactics — Whenever Hobgoblin Captain attacks, if you attacked with creatures with total power 6 or greater this combat, Hobgoblin Captain gains first strike until end of turn.