msem-instigator

At the beginning of your upkeep, if each opponent controls more lands than you, search your library for a basic land card, reveal it, and put it into your hand, then shuffle.

Flying
If a source without flying would deal damage to you, prevent 2 of that damage.
Crew 5

Whenever Heedless Astronaut attacks, it gets +2/+0 and gains indestructible until end of turn.

When Herald of Darkness enters, destroy up to one target creature with mana value 3 or less.

Whenever Herald of Heroes deals combat damage to a player, reveal the top five cards of your library. You may put a creature card with power 2 or less from among them into your hand. Put the rest on the bottom of your library in any order.

Trample
At the beginning of your end step, if there are two or more +1/+1 counters among creatures you control, return Herald of Might from your graveyard to the battlefield.

When Herald of Teardrops enters, choose one. If you control another Elemental, you may choose both instead.
• Create a 1/1 blue Elemental creature token with flying.
• Put a +1/+1 counter on each of up to two creatures.

Haste
Herald of Unity's power is equal to the number of creatures you control.

Flash
When Herald of Wisdom enters, you may cast target instant or sorcery card with mana value 4 or less from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Destroy target creature or planeswalker.

Enchant creature
Enchanted creature gets +2/+0.
{2}{B}, Exile Hold Me Down from your graveyard: Return target creature card from your graveyard to your hand.

As Holdsteady Engine enters, choose a card name.
Cards with the chosen name entering the battlefield don't cause abilities to trigger.
Activated abilities of cards with the chosen name can't be activated unless they're mana abilities.

Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
Hopeless Wanderer can't be blocked.

Trample
Whenever Horrific Progenitor deals damage to a player, for each damage dealt, that player loses 3 life unless they sacrifice a nonland permanent or discard a card.

Return up to one target permanent card and up to one target Horror card from your graveyard to your hand.

Hostile Habitat deals 2 damage to each creature.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

This spell costs {1} less to cast for each creature that attacked this turn.
Hot to the Touch deals X damage to any target.

Hub of Innovation enters tapped.
At the beginning of your upkeep, if you control five or more artifacts, draw a card.
{T}: Add {C}.

Destroy target Human creature.

Target creature you control gets +X/+X until end of turn. It fights target creature you don't control.

{1}{G}{G}, Discard a card: Destroy target artifact or enchantment.
At the beginning of your end step, if twelve or more cards are in your graveyard, create two 3/3 green Beast creature tokens.

Whenever Hurried Scavenger attacks or blocks, you may mill two cards.
Hurried Scavenger gets +4/+4 as long as you have five or more card types among cards in your graveyard.

Exile all creature cards from target player's graveyard. For each creature card exiled this way, search that player's library for any number of cards with the same name as that card and exile them. Then that player shuffles.

{1}{W}: Artifact creatures you control get +1/+1 until end of turn. Activate only once each turn.

Whenever IG-2 Disassembler enters or attacks, you may sacrifice an artifact. When you do, IG-2 Disassembler deals 2 damage to target player or planeswalker.