At the beginning of combat on your turn, put a +1/+1 counter on equipped creature.
Equipped creature has flying as long as it has two or more +1/+1 counters on it.
Equipped creature has double strike as long as it has four or more +1/+1 counters on it.
Equip {2}

This land enters tapped.
Level up {R}{R}{R}
[level 1-2] Menace
This land is also a creature.
[level 3+] Menace
This land is also a creature.

Groupthink Tank enters tapped.
{T}: Add {W} or {B}.
{4}: Make a pledge. Activate only as a sorcery.

Hallowed Chamber enters tapped unless you control a basic non-Swamp land.
{T}: Add {B}.
{1}, {T}, Sacrifice Hallowed Chamber: Create two Treasure tokens.

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

Vigilance
{T}: Add {C}.
{1}, {T}: Add one mana of any color.
Spellcharge 2

Hazakh District enters tapped unless you control an Island, a Swamp, and a Mountain.
{T}: Add {U}, {B}, or {R}.

This land enters tapped.
Level up {B}{B}{B}
[level 1-2] Deathtouch
This land is also a creature.
[level 3+] Deathtouch
This land is also a creature.

{T}, Sacrifice a creature: Until the end of your next turn, if you would lose unspent mana, that mana becomes colorless instead.
{2}: Add one mana of any color.

Ward {2}
Whenever this creature attacks, destroy up to one target nonland permanent.

{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}

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.

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

Holo-Map enters with two charge counters on it.
{1}, {T}, Remove a charge counter from Holo-Map: Target creature can't be blocked this turn. Scry 2.

This land enters tapped.
{2}{G}{W}, {T}: Surveil 1.

Hundred-Handed Pillars enters tapped.
{T}: Add {W} or {U}.
{7}{W/U}: Hundred-Handed Pillars becomes a 4/6 white and blue Giant creature with vigilance until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to white and blue. Activate only once each turn.

{4}, {T}, Sacrifice this artifact: It deals 100 damage to target creature an opponent controls. Activate only as a sorcery.

Whenever Implacable Shrine-Guard attacks, for each color, do the following if your devotion to that color is three or greater.
{W} — Create a 1/1 white Human creature token.
{U} — Draw a card.
{B} — Each opponent loses 2 life.
{R} — Create a Treasure token.
{G} — You gain 3 life.

Imposing Oddity enters with X +1/+1 counters on it.
Whenever Imposing Oddity becomes spellcharged, put a +1/+1 counter on it.
Spellcharge 4
When Imposing Oddity dies, you may put its counters on another target Ruin you control.

Integrate target permanent spell.

Choose a card name. Target permanent gains protection from the chosen name until end of turn. Scry 2.

Enchant creature
Whenever enchanted creature deals or is dealt damage, exile it.

Each player reveals their hand, then you choose a nonland card type. Each player discards all cards of the chosen type, then draws a card for each card they discarded this way.
Draw a card.

Interrogation Chamber enters tapped.
{T}: Add {U} or {B}.
{4}: Make a pledge. Activate only as a sorcery.