Creatures you control get +0/+1 for each Gate you control and have vigilance.

, Exile a card from your hand: Return target card from your graveyard to your hand if it shares a card type with the card exiled this way. (Artifact, battle, creature, enchantment, kindred, instant, land, planeswalker, and sorcery are card types.)

Flying

Whenever Hollow Specter deals combat damage to a player, you may pay . If you do, that player reveals X cards from their hand and you choose one of them. That player discards that card.

Hollow Warrior can't attack or block unless you tap an untapped creature you control not declared as an attacking or blocking creature this combat. (This cost is paid as attackers or blockers are declared.)

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

Flying

When Hollowhenge Spirit enters, remove target attacking or blocking creature from combat.

Enchant creature

Enchanted creature gets +0/+2.

: Enchanted creature gets +0/+1 until end of turn.

, : Tap target creature. If that creature is a Zombie, exile it.

Enchant creature

Enchanted creature gets +2/+2 and has protection from creatures.

Homarid enters with a tide counter on it.

At the beginning of your upkeep, put a tide counter on Homarid.

As long as there is exactly one tide counter on Homarid, it gets -1/-1.

As long as there are exactly three tide counters on Homarid, it gets +1/+1.

Whenever there are four or more tide counters on Homarid, remove all tide counters from it.

, Sacrifice a blue creature: Create X 1/1 blue Camarid creature tokens, where X is the sacrificed creature's mana value.

: Add .

: Each player gains control of all creatures they own.

As long as you control exactly one creature, that creature gets +3/+1 and has lifelink.

Each Sliver card in each player's hand has slivercycling .

Slivercycling (, Discard this card: Search your library for a Sliver card, reveal it, put it into your hand, then shuffle.)

Creatures you control get +2/+2 and have flying and ": This creature gets +1/+0 until end of turn."

At the beginning of your upkeep, Honden of Infinite Rage deals damage to any target equal to the number of Shrines you control.

At the beginning of your upkeep, target opponent discards a card for each Shrine you control.

: Honor Guard gets +0/+1 until end of turn.

Exile all creature cards from all graveyards. You gain 1 life for each card exiled this way.

When Honorable Scout enters, you gain 2 life for each black and/or red creature target opponent controls.

Hooded Horror can't be blocked as long as defending player controls the most creatures or is tied for the most.

Return target artifact, enchantment, or land to its owner's hand.

Whenever you draw a card, you may put a hoofprint counter on Hoofprints of the Stag.

, Remove four hoofprint counters from Hoofprints of the Stag: Create a 4/4 white Elemental creature token with flying. Activate only during your turn.

Choose one —

• Target creature gains first strike until end of turn.

• Target player gains 2 life.

• Destroy target Aura.

: Hopping Automaton gets -1/-1 and gains flying until end of turn.

Vigilance, trample, haste

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

Flash

Flying, trample

Whenever you draw a card, you gain 1 life.

Flying

When Horizon Scholar enters, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

, , 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.

Whenever a player plays a land, that player draws a card.

: Add .

Sacrifice Horn of Ramos: Add .

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.

: Regenerate Horned Troll.

Flying, haste

First strike

Flying, deathtouch

When Hornet Queen enters, create four 1/1 green Insect creature tokens with flying and deathtouch.

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>

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.)

: Untap Horseshoe Crab.

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.

Haste

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

Strive — This spell costs more to cast for each target beyond the first.

Exile any number of target creatures. For each creature exiled this way, its controller creates a 4/4 blue Sphinx creature token with flying.

Defender, flying

Flying

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

Target creature gets +X/+0 until end of turn.

Creatures with power less than Howlgeist's power can't block it.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Target creature gets +4/+0 until end of turn.

At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.