When Hearty Roughrider enters or leaves the battlefield, you gain life equal to the greatest toughness among creatures you control.
Wander {4}{G}{G}

At the beginning of combat on your turn, if you have at least 3 life more than your starting life total, untap target land.

Lifelink
{5}{W}: Creatures you control get +1/+1 until end of turn.

When Heavy Snowfall enters, target creature you control gets +1/+1 and gains indestructible until end of turn.

When Heavy Winds enters and whenever you cast a spell, prevent all damage up to one target permanent would deal this turn.

As an additional cost to cast this spell, sacrifice a creature or pay {4}.
Heedless Cruelty deals 5 damage to target creature or planeswalker.

Favored
Whenever your Champion attacks, scry 1.

Enchant creature
Enchanted creature has defender.
Approval — {2}: Exile enchanted creature if its power is less than or equal to the number of colors among permanents you control.

{2}, Sacrifice Helm of the Shattered Realm: Destroy target artifact or enchantment. Activate only as a sorcery.
Equipped creature gets +1/+1 and has ward {2}.
Equip {1}

Defender
When Herald of Awakening enters, draw a card. Then discard a card unless you control a Ruin.
Whenever a Ruin you control becomes spellcharged, Herald of Awakening loses defender until end of turn.

Flying
When Herald of Drizzles enters, it acclimates.

Favored

At the beginning of your end step, if you cast no spells this turn, surveil 1.
Spellcharge 6

Amity — Whenever you attack with Higana and exactly one other creature, create a 3/3 green, blue, and red Dragon creature token. If the other attacking creature was a Dragon, the token has flying. If it also had flying, the token has vigilance. If it also had vigilance, the token has double strike.
{1}{W}: Create Shigana, a legendary 2/2 white Beast creature token with haste.

When High Senator Talpa enters, choose target opponent. If you control fewer creatures than that player, create a number of 1/1 colorless Soldier creature tokens equal to the difference. If you have fewer cards in hand than that player, draw cards equal to the difference.

High Teqien enters tapped unless you control a basic non-Island land.
{T}: Add {U}.
{2}{U}, {T}, Sacrifice High Teqien: Gain control of target land. Its owner may search their library for a basic land card, put it onto the battlefield, then shuffle.

This spell costs {2} less to cast as long as you've cast another instant or sorcery spell this turn.
High Voltage deals 3 damage to any target.

Lifelink
As long as you have at least 3 life more than your starting life total, each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.

Vigilance
Whenever another creature entering the battlefield under your control causes an ability of a permanent you control to trigger, put a +1/+1 counter on that creature and you gain 1 life. This ability triggers only once each turn.

Menace
Whenever Highseas Renegade deals combat damage to a player, exile the top card of their library. You may play that card until the end of your next turn, and mana of any type can be spent to cast it.

You may pay {R} rather than pay this spell's mana cost. Spend only mana produced by artifact sources to cast it this way.
Hired Shot deals 3 damage to any target.

Hivecaste Vukoroq gets +1/+2 as long as you control another creature named Hivecaste Vukoroq.

You draw two cards and you lose 2 life.
Landfall — If a land entered the battlefield under your control this turn, each opponent loses 2 life.

Flying
When Hoarding Rocs enters, look at the top three cards of your library. You may reveal an artifact card from among them and put it into your hand. Put the rest on the bottom in a random order.

When Hoenn Champion enters, create a creature token for each of the following characteristics.
• 3/3 white and black Bird with flying, vigilance, and haste.
• 2/4 red Bird Warrior with double strike, vigilance, and haste.
No more than two creatures can attack each combat. No more than two creatures can block each combat.