msem-instigator

Mettalia is all colors.
Mettalia has protection from each color among cards she's salvaged in exile.
When Mettalia enters the battlefield, for each color, you may salvage a nonlegendary card of that color. (Exile one from your graveyard until this creature leaves the battlefield. Whenever this creature deals combat damage to a player, put a card it salvaged into your hand.)

You may have Mutalithic Golem enter the battlefield as a copy of any land on the battlefield, except it's an artifact in addition to its other types.

Equipped creature gets +2/+2.
Concord — Whenever equipped creature attacks, if there are four or more card types among permanents you control, create a 3/3 red Shark enchantment creature token that's tapped and attacking. Exile that token at the beginning of the next end step.
Equip {1}

{X}, Exile Mysterious Coffer: Return all nonland permanents with mana value X or less to their owner's hands.

You may return a land you control to its owner's hand rather than pay this spell's mana cost.
Northern Express Line enters the battlefield tapped.
{T}: Add {U}.

Trample
Each creature you control can't have power less than 11 and can't have toughness less than 11. (If it would have less, it has 11 instead.)

You may return a land you control to its owner's hand rather than pay this spell's mana cost.
Rawthlin Market Line enters the battlefield tapped.
{T}: Add {G}.

Restored Automaton enters the battlefield with X +1/+1 counters on it.
Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)

At the beginning of your end step, aetherize target permanent you control. (To aetherize, create a token that's a copy of it, then exile that token.)

Runic Pillars enters the battlefield tapped.
{T}: Add {C}{C}{C}.
{2}: Add one mana of any color.

Whenever S-40 Wallbreaker attacks, create a 1/1 colorless Construct artifact creature token.
{X}, Sacrifice X artifacts: S-40 Wallbreaker deals X damage to each opponent.

Concord — This spell costs {4} less to cast if there are four or more card types among permanents you control.
Vigilance, trample, lifelink, haste

Equipped creature gets +1/+1 and has deathtouch.
{1}: Serpent Staff becomes a 1/1 green Snake creature with deathtouch and loses all other abilities until end of turn.
Equip {3}

Slaughterkeg can't attack or block.
While an opponent is choosing targets as part of casting a spell they control or activating an ability they control, that player must choose at least Slaughterkeg if able.
When Slaughterkeg dies, draw a card.

When Snagged Truck enters the battlefield, investigate three times. (Create three colorless Clue artifact tokens with “{2}, Sacrifice this: Draw a card.”)
Snagged Truck can't attack or block as long as you control a Clue.
Crew 2 (Tap any number of creatures you control with total power 2 or greater: This Vehicle becomes an artifact creature until end of turn.)

Whenever equipped creature deals combat damage to a player, put two balance counters on Staff of Equilibrium.
Remove a balance counter from Staff of Equilibrium: Staff of Equilibrium deals 1 damage to any target.
Equip {1}

Equipped creature gets +2/+2 and protection from blue and from black.
Whenever equipped creature deals combat damage to a player, return up to one target creature card and up to one target instant or sorcery card from your graveyard to your hand.
Equip {2}

When Unity Spheres enters the battlefield, create two 1/1 colorless Construct artifact creature tokens.
Tap two untapped creatures you control: Add two mana of any one color.

Warded Tome doesn't untap during your untap step.
{T}: Draw a card.
{5}: Untap Warded Tome.

Weeping Lotus enters the battlefield with five petal counters on it.
At the beginning of your upkeep, remove a petal counter from Weeping Lotus. If you do, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Whenever you cast an instant or sorcery spell, you may have Xenocrata's Fleet become a 4/4 Ship artifact creature with haste until end of turn.
Whenever Xenocrata's Fleet deals combat damage to an opponent, create that many 1/1 red Warrior creature tokens.

({T}: Add {U}.)
Aerie's Pillar enters the battlefield tapped.
Flying
{2}{U}{U}: Aerie's Pillar becomes a creature in addition to its other types until end of turn.

As Alratha, Pearl of the Sand Sea enters the battlefield, you may have an opponent investigate. If you don't, it enters the battlefield tapped. (To investigate, create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)
{T}: Add {U}.
{1}{U}, {T}: Investigate.

As Amber Hills enters the battlefield, you may pay 2 life. If you don't, Amber Hills enters the battlefield tapped.
{T}, Sacrifice Amber Hills: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

({T}: Add {U}, {R}, or {W}.)
Ancient Dominion enters the battlefield tapped.