Golems you control have menace.
Unyielding Titan can't attack or block unless you control three or more Golems.
Whenever Unyielding Titan enters or attacks, target opponent reveals their hand. Exile a nonland card from their hand or graveyard.
{3}, {T}: Create a 1/1 white Golem creature token.

When Urban Explorer enters, return a permanent card with mana value 1 or less from your graveyard to your hand.
Landfall — Whenever a land you control enters, Urban Explorer gets +2/+1 until end of turn.

Mill two cards, then return a creature card from your graveyard to your hand.
Surface {3}{B}

The first spell you cast during each of your opponent's turns cost {U}{B} less to cast.
During each ending phase, nonland cards in your graveyard have flash and surface. The surface cost is equal to their mana cost.
Surface {6}{U}{U}{B}

Flying, haste
Amity — Whenever you attack with Warden of Heart and exactly one other creature, you may put a legendary or Dragon card from your hand onto the battlefield tapped and attacking.

This spell can't be countered.
Flying, vigilance, trample
Players can't cast spells from anywhere other than their hands.
Spells your opponents cast that cost less than five mana to cast and target you and/or spells or permanents you control cost five mana to cast.

Flying
Amity — Whenever you attack with Warden of Soul and exactly one other creature, search your library for a legendary or Dragon card, reveal it, put it into your hand, then shuffle.

The first spell you cast during each of your turns costs {R}{G} less to cast.
You may play two additional lands on each of your turns.
Landfall — Whenever a land you control enters, you may exile the top three cards of your library. You may play those cards from exile as long as you control Warden of Tremors.

Flying
When Warden of Wishes enters, put three wish counters on it, then you gain 7 life.
Whenever you lose life, you may remove a wish counter from Warden of Wishes. If you do, put a card you own from outside the game into your hand.

Landfall — Whenever a land you control enters, each opponent loses 1 life.

Flying
Whenever Weather Elemental enters or attacks, it acclimates.
If a triggered ability of a Weather you control would trigger, it triggers an additional time.

{T}: Add {C}.
{T}: Add one mana of any color. If you don't control a Weather, spend this mana only to cast a Weather spell.

Flying
{2}: Exile the top card of your library face down. You may look at it as long as it remains exiled.
During each of your opponents' turns, you may cast a card exiled with Weaver of Fates as though it had flash.

You may cast this spell as though it had flash if you activated a nonmana ability this turn.
Target artifact or creature's owner puts it on their choice of the top or bottom of their library.

{3}: Whispering Runt gets +1/+1 until end of turn. If you spent at least {U}{R}{W} to activate this ability, you may transform Whispering Runt.

This spell can't be countered.
Trample
Surface {3}{U}{U}. Wrecking Whale surfaces tapped.

Flying
Amity — Whenever you attack with Zipping Lightningbug and exactly one other creature, target creature you don't control gets -2/-0 until end of turn.

Put target creature on top of its owner's library. Its controller surveils 1, then you surveil 1.

When Adaptive Hydra enters, teach it your choice of haste, menace, or vigilance. Then repeat this process X times.

Whenever you cast a spell, if mana from an artifact source was spent to cast it, you may copy that spell, and you may choose new targets for the copy. Do this only once each turn.

Whenever Anesthesiologist attacks, teach Anesthesiologist lifelink if you control a white permanent. Otherwise, you gain 2 life.

Menace
When Ardent Voter enters, make a pledge.

At the beginning of your upkeep, exile the top card of your library.
You may play cards exiled with Aristocracy as long as you've sacrificed a nonland permanent this turn.

Army Reserves enters with X +1/+1 counters and a defender counter on it.
{1}: Move a counter from Army Reserves onto another target creature. Activate only as a sorcery.

Flying
Whenever Arsenal Mentor attacks, teach target attacking creature with lesser power flying.