msem-instigator

When Confine to the Oasis enters, exile target nonland permanent an opponent controls until Confine to the Oasis leaves the battlefield.
Whenever an opponent casts a spell, put a searching counter on Confine to the Oasis for each of that card's colors. Then if there are ten or more searching counters on Confine to the Oasis, sacrifice it and you gain 3 life.

Create three 1/1 white Soldier creature tokens. Scry 3.

Create a 1/1 white Soldier creature token with vigilance.
At the beginning of combat on your turn, you may pay {2}{W}. If you do, creatures you control get +1/+1 until end of turn.

Machinate — {T}, Tap another untapped artifact you control: Exile target artifact or creature, then return that card to the battlefield tapped under its owner's control.

Advance {2}{W} (Cast this for {2}{W} to advance it as it enters. {2}{W}: Advance this as a sorcery.)
Whenever Construct Engine advances, create a 1/1 colorless Construct artifact creature token.

At the beginning of your end step, return target creature card with mana value X or less from your graveyard to the battlefield with a finality counter on it, where X is the greatest number of creatures you control that share a creature type.

Enchant creature
Enchanted creature gets +1/+3.
{W}: Return Conviction to its owner's hand.

Exile target creature with power 4 or greater.
Create a Treasure token. (It's an artifact with “{T}, Sacrifice this permanent: Add one mana of any color.”)

Choose one —
• Target permanent gains indestructible and lifelink until end of turn.
• Exile target enchantment with mana value 3 or less.

Destroy all creatures and planeswalkers. If five or more colors of mana were spent to cast Cosmic War, return a creature or planeswalker card from your graveyard to the battlefield.

Enchant creature
Enchanted creature gets +2/+2 and has “Whenever this creature attacks, tap target creature defending player controls.”

Enchant creature or planeswalker
Enchanted permanent can't attack or block and loses all abilities.

Enchant creature
Enchanted creature gets +1/+3 and has flying.

(As an Encounter enters, choose an opponent to protect it. You and others can attack it. When defense counters are removed, create a 0/0 Army token if you don't control one, then put that many +1/+1 counters on a Army you control.)
When Crisis in Soli enters, amass Soldiers 3. (Put three +1/+1 counters on an Army you control. It's also a Soldier. If you don't control one, create an 0/0 black Soldier Army creature token first.)

Distribute four -1/-1 counters among any number of target attacking or blocking creatures.

Equipped creature gets +2/+2.
Whenever equipped creature attacks, each opponent who controls more artifacts than you sacrifices an artifact. Opponents sacrifice creatures, enchantments, lands, and planeswalkers the same way.
Equip {1}{W}

Enchant creature
When Crowning Ceremony enters, draw a card.
Enchanted creature gets +1/+0.

You gain 3 life. Choose one —
• You gain 3 life.
• Draw a card.

Reflections you control get +2/+2 until end of turn. Other creatures you control get +1/+1 until end of turn.

Escalate {W}{W} (Pay this cost for each mode chosen beyond the first.)
Choose one or more. You may choose the same mode more than once.
• Create two 1/1 white Spirit creature tokens with flying.
• You gain 6 life.

Each player who controls a creature with power 3 or less draws a card. Then destroy all creatures.

At the beginning of your end step, you may put a progress counter on Custom Armaments.
[progress 1-3] Sacrifice Custom Armaments: Destroy target blocked creature.
[progress 4+] Sacrifice Custom Armaments: Exile up to two target blocked creatures.
Sacrifice CARDNAME: Exile up to two target blocked creatures.

Enchant creature or planeswalker
Enchanted permanent can't attack or block and loses all abilities.

Put three -1/-1 counters on target attacking or blocking creature.

Exile all creatures. Exile Cycle of Creation with X genesis counters on it, where X is the number of creatures exiled this way.
Whenever you cast a spell, if Cycle of Creation is in exile, you may remove a genesis counter from it. If you do, create a 1/1 white Human creature token.