: Add . Put a time counter on Hourglass of the Lost.

, Remove X time counters from Hourglass of the Lost and exile it: Return each nonland permanent card with mana value X from your graveyard to the battlefield. Activate only as a sorcery.

, : Target creature doesn't untap during its controller's next untap step.

, : Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Flying

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

Whenever you cast a spell, you may have target player mill X cards, where X is the number of words in that spell's name.

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.)

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

Whenever Howling Chorus deals combat damage to a player, create a 3/2 colorless Eldrazi Horror creature token.

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

Each creature you control that's a Wolf or a Werewolf gets +1/+1 and has trample.

Huang Zhong, Shu General can't be blocked by more than one creature.

Each creature you control assigns combat damage equal to its toughness rather than its power.

−3: You gain life equal to the greatest toughness among creatures you control.

Vigilance

When Huatli's Raptor enters, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Target creature gets +2/+0 until end of turn. If you control a Huatli planeswalker, that creature gets +4/+0 until end of turn instead.

Trample

When Hugs, Grisly Guardian enters, exile the top X cards of your library. Until the end of your next turn, you may play those cards.

You may play an additional land on each of your turns.

: Add one mana of any color. Spend this mana only to cast a creature spell.

Hexproof (This creature can't be the target of spells or abilities your opponents control.)

Target creature gets +1/+0 and gains first strike until end of turn.

Splice onto Arcane—Tap an untapped white creature you control. (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

At the beginning of your upkeep, sacrifice Hungry Mist unless you pay .

Create a 1/1 black and green Pest creature token with "When this creature dies, you gain 1 life."

Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)

Hunted Phantasm can't be blocked.

When Hunted Phantasm enters, target opponent creates five 1/1 red Goblin creature tokens.

When Hunted Wumpus enters, each other player may put a creature card from their hand onto the battlefield.

All Sliver creatures have provoke. (Whenever a Sliver attacks, its controller may have target creature defending player controls untap and block it if able.)

Equipped creature gets +1/+1.

Equipped creature has deathtouch during your turn. Otherwise, it has reach.

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

Put a +1/+1 counter on target creature you control. Then that creature deals damage equal to its power to target creature you don't control.

Choose target creature you control. Whenever that creature deals combat damage to a player or planeswalker this turn, draw that many cards.

Until end of turn, target creature gets +3/+3 and gains trample and "Whenever this creature deals combat damage to a player, draw that many cards."

Threshold — As long as seven or more cards are in your graveyard, Hunting Grounds has "Whenever an opponent casts a spell, you may put a creature card from your hand onto the battlefield."

Mutate (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own. They mutate into the creature on top plus all abilities from under it.)

Whenever this creature mutates, other creatures you control get +X/+X until end of turn, where X is the number of times this creature has mutated.

At the beginning of your end step, if you've cast a noncreature spell this turn, reveal the top five cards of your library. For each card type among noncreature spells you've cast this turn, you may put a card of that type from among the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

Return all artifacts target player owns to their hand.

, Sacrifice another creature: Hurler Cyclops deals 1 damage to any target.

Destroy all enchantments.

Cycling (, Discard this card: Draw a card.)

Flash

Flying

Creatures entering don't cause abilities to trigger.

This spell costs less to cast for each creature card you own in exile and in your graveyard.

Menace, deathtouch

Target creature attacks or blocks this turn if able.

: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)

When Hydra Broodmaster becomes monstrous, create X X/X green Hydra creature tokens.

Choose one —

• Counter target spell if it's red.

• Destroy target permanent if it's red.

When you cast this spell, you gain half X life and draw half X cards. Round down each time.

Flying, trample

Hydroid Krasis enters with X +1/+1 counters on it.

Target creature gets -5/-0 until end of turn.

Suspend 3—

Starting with you, each player may put an artifact, creature, enchantment, or land card from their hand onto the battlefield. Repeat this process until no one puts a card onto the battlefield.

Flying, haste

You may cast sorcery spells as though they had flash. (You may cast them any time you could cast an instant.)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Flying

You control enchanted creature.

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

Flying

Draw two cards. Then you may discard a nonland card. When you do, Hypothesizzle deals 4 damage to target creature.

Creatures your opponents control get -4/-0 until end of turn.

Science Teacher — Each Saga spell you cast has replicate. The replicate cost is equal to its mana cost. (When you cast that Saga, copy it for each time you paid its replicate cost. Copies of Saga spells become tokens.)

Doctor's companion (You can have two commanders if the other is the Doctor.)

Icatian Javelineers enters with a javelin counter on it.

, Remove a javelin counter from Icatian Javelineers: It deals 1 damage to any target.

, : Target creature gains first strike until end of turn.

Icatian Store enters tapped.

You may choose not to untap Icatian Store during your untap step.

At the beginning of your upkeep, if Icatian Store is tapped, put a storage counter on it.

, Remove any number of storage counters from Icatian Store: Add for each storage counter removed this way.

Protection Fighting Style — When Icewind Stalwart enters, exile up to one target non-Warrior creature you control, then return it to the battlefield under its owner's control.

Trample

Remove a ki counter from Ichiga, Who Topples Oaks: Target creature gets +2/+2 until end of turn.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

When Ichor Rats enters, each player gets a poison counter.