Constellation — Whenever Harvestguard Alseids or another enchantment enters the battlefield under your control, prevent all damage that would be dealt to target creature this turn.

Trample

Daybound (If a player casts no spells during their own turn, it becomes night next turn.)

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

Reach

Undergrowth — When you cast this spell, reveal the top X cards of your library, where X is the number of creature cards in your graveyard. You may put a green permanent card with mana value X or less from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

: Target blue or red creature gets +1/+0 until end of turn.

Lifelink

Whenever an enchanted creature dies, draw a card for each Aura you controlled that was attached to it.

When Haunt of the Dead Marshes enters the battlefield, scry 1.

: Return Haunt of the Dead Marshes from your graveyard to the battlefield tapped. Activate only if you control a legendary creature.

Whenever Haunted Cadaver deals combat damage to a player, you may sacrifice it. If you do, that player discards three cards.

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

Defender, first strike

Flying

As Haunting Apparition enters the battlefield, choose an opponent.

Haunting Apparition's power is equal to 1 plus the number of green creature cards in the chosen player's graveyard.

Create a 1/1 white Human creature token and a Food token. (Then exile this card. You may cast the creature later from exile.)

, , Exile a creature card from your graveyard: Create a 2/2 black Zombie creature token, then put a +1/+1 counter on each Zombie creature you control.

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.

Havi, the All-Father has indestructible as long as there are four or more historic cards in your graveyard. (Artifacts, legendaries, and Sagas are historic.)

Sage Project — Whenever Havi or another legendary creature you control dies, return target legendary creature card with lesser mana value from your graveyard to the battlefield tapped.

Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

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

Flying

Shroud (This creature can't be the target of spells or abilities.)

When Haywire Mite dies, you gain 2 life.

, Sacrifice Haywire Mite: Exile target noncreature artifact or noncreature enchantment.

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

When Haze Frog enters the battlefield, prevent all combat damage that other creatures would deal this turn.

When Hazezon Tamar enters the battlefield, create X 1/1 Sand Warrior creature tokens that are red, green, and white at the beginning of your next upkeep, where X is the number of lands you control at that time.

When Hazezon leaves the battlefield, exile all Sand Warriors.

Indestructible, haste

Hazoret the Fervent can't attack or block unless you have one or fewer cards in hand.

, Discard a card: Hazoret deals 2 damage to each opponent.

Flying

, Sacrifice a Spirit: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.

Soulshift 4 (When this creature dies, you may return target Spirit card with mana value 4 or less from your graveyard to your hand.)

As an additional cost to cast this spell, exile a creature card from your graveyard.

Headless Skaab enters the battlefield tapped.

Haste

When Headliner Scarlett enters the battlefield, creatures target player controls can't block this turn.

At the beginning of your upkeep, exile the top card of your library face down. You may look at and play that card this turn.

Whenever another creature enters the battlefield under your control, you gain 2 life.

Flying, lifelink

All Sliver creatures have haste.

First strike

: Target Dwarf creature gets +2/+0 and gains first strike until end of turn. When that creature leaves the battlefield this turn, sacrifice Heart Wolf. Activate only during combat.

Instant and sorcery spells you control have lifelink.

This spell costs less to cast, where X is the number of cards in your graveyard that are instant cards, sorcery cards, and/or have an Adventure.

When Hearthcage Giant enters the battlefield, create two 3/1 red Elemental Shaman creature tokens.

Sacrifice an Elemental: Target Giant creature gets +3/+1 until end of turn.

Haste

Chroma — When Heartlash Cinder enters the battlefield, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control.

At the beginning of your upkeep, remove a -1/-1 counter from each creature you control.

Persist (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.)

Create a 1/1 white Human creature token. (Then exile this card. You may cast the creature later from exile.)

Heartwood Dryad can block creatures with shadow as though Heartwood Dryad had shadow.

Whenever a player casts a noncreature spell, each of that player's opponents may draw a card.

Flying, double strike

When Heavenly Blademaster enters the battlefield, you may attach any number of Auras and Equipment you control to it.

Other creatures you control get +1/+1 for each Aura and Equipment attached to Heavenly Blademaster.

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

Menace

At the beginning of your upkeep, tap Heavyweight Demolisher unless you pay .

Unearth (: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Hedge Troll gets +1/+1 as long as you control a Plains.

: Regenerate Hedge Troll.

Landfall — Whenever a land enters the battlefield under your control, target player mills three cards.

Whenever an artifact enters the battlefield under your control, 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.

Landfall — Whenever a land enters the battlefield under your control, Hedron Scrabbler gets +1/+1 until end of turn.

Trample

Heedless One's power and toughness are each equal to the number of Elves on the battlefield.

Trample

Whenever a Samurai or Warrior you control attacks alone, you may cast target artifact card from your graveyard this turn.

Heir of the Ancient Fang enters the battlefield with a +1/+1 counter on it if you control a modified creature. (Equipment, Auras you control, and counters are modifications.)

Flying

Whenever you cycle or discard a card, Hekma Sentinels gets +1/+1 until end of turn.