msem-instigator

When Onward to War enters, draw a card, then choose a card name.
Whenever one or more creatures you control with the chosen name attack, look at the top four cards of your library. Put a creature or enchantment card with mana value 3 or less from among them into your hand. Put the rest on the bottom of your library in any order.

For each nonland token you control, create a token that's a copy of it.

Enchant creature
Enchanted creature can't attack or block unless its controller pays {3}.
Activated abilities of enchanted creature cost {3} more to activate.

Creatures can't attack you unless their controller pays {3} for each of those creatures.

(Activate each submodule once as a sorcery. When this enters, activate one submodule for free.)
{W}{W}{W}: Purpose
Create three 1/1 white Spirit creature tokens with flying.
{W}{W}{W}: Justice
Exile target nonland permanent you don't control until Order Module leaves the battlefield.
{W}{W}{W}: Unity
Order Module gains “Creatures you control get +1/+1.”

Exile target nontoken permanent you control, then return that card to the battlefield under its owner's control.

When Ostracizer Orb enters, exile target nonartifact, nonland permanent until Ostracizer Orb leaves the battlefield.

Create X 1/1 blue Elemental creature tokens with flying.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, creatures you control gain haste and vigilance until end of turn.

Exile any number of target creatures you control. At the beginning of the next end step, return to the battlefield tapped each creature card exiled this way and each creature card put into your graveyard from the battlefield this turn.

Enchant player
At the beginning of enchanted player's upkeep, they tap an untapped creature they control.

Exile target creature. That creature's controller creates a 1/1 blue Elemental creature token with flying.

Destroy target attacking or blocking creature.

Destroy target creature with power 4 or greater. (You need a target to cast this spell.)
Tap up to two target creatures.

Enchant creature
Enchanted creature can't attack or block.

Enchant creature
Prevent all damage that would be dealt by enchanted creature.

All damage that would be dealt to target creature you control this turn is dealt to another target creature you control instead. Both those creatures get +1/+1 until end of turn.
Flashback {1}{W} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Foretell {3}{W} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
This spell's foretell cost costs {3} less to pay if you have 5 or less life.
You gain 10 life.

Choose two or four —
• Exile target player's graveyard.
• You gain 4 life.
• Create a 2/2 white Knight creature token with vigilance.
• Conjure a card named Fatigue and put it on top of your library. (It's a colorless sorcery that costs {2} with “Draw a card.”)

Target player sacrifices an enchantment. You gain 4 life.

Each player draws two cards.
Flashback—{W}, Tap two untapped white creatures you control. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Equipped creature gets +2/+0 and has first strike.
Equip Cleric or Knight {1}
Equip {3}

When Pandora's Eviction enters, exile target creature an opponent controls until Pandora's Eviction leaves the battlefield.
{4}{W}: Exile Pandora's Eviction. Return it to the battlefield under its owner's control at the beginning of the next end step.

Enchant creature
Enchanted creature gets +1/+1 and has “At the beginning of each end step, you gain 1 life.”

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Tap target creature. If this spell's tithe was paid, exile that creature.

As long as your deck contains only white and colorless cards, your minimum deck size is reduced by eight.