Whenever a nontoken creature enters the battlefield,
Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

Gain control of target creature until end of turn. Untap that creature and roll a six-sided die. Until end of turn, it gains haste and gets +X/+0, where X is the result.

As Hammer Jammer enters the battlefield, roll a six-sided die. Hammer Jammer enters the battlefield 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.

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

, : Create a 2/2 colorless Homunculus creature token. It must be represented by a unique hand and two fingers at all times, or it ceases to exist.

As Hangman enters the battlefield, secretly note a word with six to eight letters.
: Target player who doesn't control Hangman guesses the noted word or an unguessed letter in that word. If they guess wrong, put a +1/+1 counter on Hangman. Any player may activate this ability.
When a player guesses the noted word or all of its letters, sacrifice Hangman.

Whenever you crank Hard Hat Area, roll two six-sided dice. Hard Hat Area assembles a number of Contraptions equal to the difference between those results. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

Enchant creature
Enchanted creature gets +2/+1 and has menace.
Whenever a player's skin or fingernail touches enchanted creature, that player loses 2 life.

Whenever you crank Head Banger, target creature must be blocked this turn if able.

Hoisted Hireling has flying as long as it's being held above the battlefield.

You have ten seconds to look at and rearrange the cards in your library. At the end of those ten seconds, if you're touching one or more of those cards, shuffle your library.

Flying
Whenever you attack with two or more creatures,
Augment (, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.)

As Hydradoodle enters the battlefield, roll X six-sided dice. Hydradoodle enters the battlefield with a number of +1/+1 counters on it equal to the total of those results.
Reach, trample

Whenever you crank Hypnotic Swirly Disc, target player mills X cards, where X is the number of creatures you control.

Assemble X Contraptions. (To assemble a Contraption, put the top card of your Contraption deck face up onto one of your sprockets.)

As Ineffable Blessing enters the battlefield, choose Flavorful or Bland.
• Flavorful — Whenever a creature with flavor text enters the battlefield under your control, draw a card.
• Bland — Whenever a creature without flavor text enters the battlefield under your control, draw a card.

As Ineffable Blessing enters the battlefield, choose Flavorful or Bland.
• Flavorful — Whenever a creature with flavor text enters the battlefield under your control, draw a card.
• Bland — Whenever a creature without flavor text enters the battlefield under your control, draw a card.

As Ineffable Blessing enters the battlefield, choose an artist.
Whenever a creature with art by the chosen artist enters the battlefield under your control, draw a card.

As Ineffable Blessing enters the battlefield, choose white-bordered or silver-bordered.
Whenever a creature with the chosen border enters the battlefield under your control, draw a card.

As Ineffable Blessing enters the battlefield, choose a rarity.
Whenever a creature with the chosen rarity enters the battlefield under your control, draw a card.