Whenever you're dealt damage,

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

At the beginning of your upkeep,

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

Halimar Depths enters tapped.

When Halimar Depths enters, look at the top three cards of your library, then put them back in any order.

: Add .

When Halimar Tidecaller enters, you may return target card with awaken from your graveyard to your hand.

Land creatures you control have flying.

Hall enters tapped.

: Add or .

, : Investigate. (Create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")

At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color.

Visit — Choose target creature you control. Each other creature you control becomes a copy of that creature until end of turn, except it isn't legendary.

Lights — 2, 6

If you control two or more other lands, Hall of Storm Giants enters tapped.

: Add .

: Until end of turn, Hall of Storm Giants becomes a 7/7 blue Giant creature with ward . It's still a land. (Whenever it becomes the target of a spell or ability an opponent controls, counter it unless that player pays .)

Hall of the Bandit Lord enters tapped.

, Pay 3 life: Add . If that mana is spent on a creature spell, it gains haste.

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.

Put all creatures on the bottom of their owners' libraries.

: Return target nonsnow land you control to its owner's hand.

: 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.

Whenever you gain life, put a +1/+1 counter on Hallowed Priest.

Vigilance

When Hallowed Spiritkeeper dies, create X 1/1 white Spirit creature tokens with flying, where X is the number of creature cards in your graveyard.

Flying

When Halo Forager enters, you may pay . When you do, you may cast target instant or sorcery card with mana value X from a graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature's color.)

, Exile Halo Scarab from your graveyard: Create a Treasure token. (It's an artifact with ", Sacrifice this artifact: Add one mana of any color.")

: Until end of turn, target token you control becomes a green Bear creature with base power and toughness 4/4 in addition to its other colors and types.

Choose a Background (You can have a Background as a second commander.)

Creatures you control that are enchanted or equipped have double strike.

At the beginning of each combat, you may attach target Aura or Equipment attached to a creature you control to target creature you control.

Whenever Hamlet Captain attacks or blocks, other Humans you control get +1/+1 until end of turn.

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

Hamlet Vanguard enters with two +1/+1 counters on it for each other nontoken Human you control.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

As Hammer Jammer enters, roll a six-sided die. Hammer Jammer enters with a number of +1/+1 counters on it equal to the result.

Whenever you roll a die, remove all +1/+1 counters from Hammer Jammer, then put a number of +1/+1 counters on it equal to the result.

Hammer of Bogardan deals 3 damage to any target.

: Return Hammer of Bogardan from your graveyard to your hand. Activate only during your upkeep.

Creatures you control have haste.

, , Sacrifice a land: Create a 3/3 colorless Golem enchantment artifact creature token.

Whenever you cast a spell with a Goblin Explosioneers watermark, Hammerfest Boomtacular deals 2 damage to any target.

Enchant creature

When Hammerhand enters, target creature can't block this turn.

Enchanted creature gets +1/+1 and has haste.

: Add .

: Target creature loses all landwalk abilities until end of turn.

Myriad (Whenever this creature attacks, for each opponent other than defending player, you may create a token copy that's tapped and attacking that player or a planeswalker they control. Exile the tokens at end of combat.)

Whenever Hammers of Moradin attacks, for each opponent, tap up to one target creature that player controls.

This spell costs less to cast for each creature you control with a +1/+1 counter on it.

Creature spells you cast cost less to cast for each creature you control with a +1/+1 counter on it.

Hanabi Blast deals 2 damage to any target. Return Hanabi Blast to its owner's hand, then discard a card at random.

Protection from white

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

You may sacrifice four Eldrazi Spawn rather than pay this spell's mana cost.

Annihilator 1 (Whenever this creature attacks, defending player sacrifices a permanent.)

Protection from black

Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

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

At the beginning of combat on your turn, equipped creature or a creature you control named Vecna gets +X/+X until end of turn, where X is the number of cards in your hand.

Equip—Pay 1 life for each card in your hand.

Equip

During combat, players can't cast instant spells or activate abilities that aren't mana abilities.

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.)

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

Whenever this creature becomes tapped, you may discard a card. If you do, draw a card.

Flying

When Hanged Executioner enters, create a 1/1 white Spirit creature token with flying.

, Exile Hanged Executioner: Exile target creature.

Equipped creature has ": Put an aim counter on Hankyu" and ", Remove all aim counters from Hankyu: This creature deals damage to any target equal to the number of aim counters removed this way."

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

All artifacts have shroud. (They can't be the targets of spells or abilities.)

: Add .

, : Target creature gains haste until end of turn.

, : If you both own and control Hanweir Battlements and a creature named Hanweir Garrison, exile them, then meld them into Hanweir, the Writhing Township.

Soulbond (You may pair this creature with another unpaired creature when either enters. They remain paired for as long as you control both of them.)

As long as Hanweir Lancer is paired with another creature, both creatures have first strike.

Defender

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

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.

When Haphazard Bombardment enters, choose four nonenchantment permanents you don't control and put an aim counter on each of them.

At the beginning of your end step, if two or more permanents you don't control have an aim counter on them, destroy one of those permanents at random.

When Happily Ever After enters, each player gains 5 life and draws a card.

At the beginning of your upkeep, if there are five colors among permanents you control, there are six or more card types among permanents you control and/or cards in your graveyard, and your life total is greater than or equal to your starting life total, you win the game.

: Add X mana of any one color, where X is the number of Allies you control.