Search your library for a basic land card, put it into the battlefield tapped, then shuffle. If this spell's flashback cost was paid, search your library for a land card rather than a basic land card.
Flashback—{G}, Sacrifice a land.

Search your library for up to two Forest cards, reveal them, put them into your hand, then shuffle.

Flash
Gulping Meqmaw's power is equal to the total number of permanents with flash you control and instant cards in your graveyard.
Whenever you cast a spell during an opponent's turn, mill two cards.

Whenever you attack, attacking creatures you control get +1/+1 until end of turn.

Landfall — Whenever a land you control enters, you may attach Hard Stone to target creature.
Equipped creature gets +3/+3.
Equip {3}

Target creature you control deals damage equal to its power to target creature. If this spell's flashback cost was paid, it deals that much damage to target player instead.
Flashback {4}{R}

When Harvesting Blade enters, target opponent exiles two cards from their hand.
Equipped creature gets +2/+1 and has “When this creature dies, you may cast a card exiled with Harvesting Blade with equal or lesser mana value without paying its mana cost.”
Equip {3}

Choose up to one for each color among blue, black, and red among permanents you control.
• Create two 2/2 colorless Minion creature tokens with decayed.
• You may sacrifice a creature. If you do, draw two cards.
• Until end of turn, creatures lose all abilities.

Whenever Hazakh Conscriptor deals combat damage to a player, create a 2/2 colorless Minion creature token with decayed.

Flash
When Hazard Blade enters, destroy target creature an opponent controls that was dealt damage this turn.
Equipped creature get +4/+0.
Equip {5}

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.

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

Favored
Whenever your Champion attacks, scry 1.

Flying
When Herald of Drizzles enters, it acclimates.

Level up {2}{W}
[level 1-2] Whenever you attack, target creature gets +2/+0 until end of turn.
[level 3+] Whenever you attack, target creature gets +5/+0 until end of turn.

Menace
When this creature enters, if a creature you controlled attacked alone this turn, you draw a card and you lose 1 life.

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.

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.

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.

Flash
Enchant creature
Enchanted creature can't attack or block.

Target player discards two cards. They lose 2 life if they discarded a land card this way.

Flying
When this creature enters, create a black Subroutine enchantment token named TICK with “Whenever this Subroutine runs, each opponent loses 1 life and you gain 1 life.”