msem-instigator

Whenever you make first contact, return target creature card from your graveyard to the battlefield. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

Enchant creature
When Spectral Chains enters, create two 1/1 white Spirit creature tokens with flying.
As long as you control a creature, enchanted creature can't attack or block and its activated abilities can't be activated.

Melee (Whenever this creature attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.)
Whenever Tegan, the Sparrowhawk attacks, you may pay {R/W}. When you do, Tegan deals 1 damage to target creature if it's tapped. Otherwise, tap it.

Choose one —
• Unwrite deals 3 damage to target attacking or blocking creature.
• Destroy target artifact.
• Destroy target enchantment.

Whenever you attack, create a colorless Equipment artifact token with “Equipped creature gets +1/+1” and equip {1}. Attach it to an attacking creature you control.
At the beginning of your end step, untap each embattled creature you control. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Transcend (Activate as a sorcery to gain the next type and a +1/+1 counter.)
When Xifang Hu enters, noncreature spells cost {2} more to cast until your next turn.
{1}{W}: Demigod — Whenever a creature attacks this turn, create a 1/1 colorless Spirit creature token.
{4}{W}{W}: God — Distribute a flying, first strike, indestructible, lifelink, vigilance, and +1/+1 counter among any number of creatures you control.

When Zareen, the Second Shah enters, search your library for a creature card with mana value 2 or less or a planeswalker card, reveal it, put it into your hand, then shuffle.
Monument {2}{W}{W} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

Each creature you control enters with an additional +1/+1 counter on it.
Each planeswalker you control enters with an additional loyalty counter on it.

Gain control of target noncreature, nonland permanent with mana value X.

Whenever you make first contact, you may draw a card. If you do, put a card from your hand on the bottom of your library. (You make first contact the first time each turn you cast a spell with a name not in your graveyard or control already.)

Flash
When Agent of Deception enters, counter target creature or planeswalker spell unless its controller pays {X}, where X is your devotion to blue. (Each {U} in the mana costs of permanents you control counts toward your devotion to blue.)

Draw four cards, then untap up to two target lands.

Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.)
Draw a card.

Look at the top four cards of your library. You may reveal a noncreature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Flying
Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
Whenever a cursed opponent draws a card, you may draw two cards.

Exile target creature, return it to the battlefield tapped under its owner's control, then choose one —
• Put a +1/+1 counter on it.
• Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)

Draw two cards. Then if this spell wasn't cast from your hand, create a Function token with “Compose.” (It's an enchantment. As you cast an instant or sorcery spell, sacrifice any number of Functions to add their effects to that spell.)
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

When Diligent Fishermen enters, look at the top four cards of your library. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Counter target spell.
If you countered a spell with mana value 2 or less this way, manifest dread. (Look at the top two cards of your library, then put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)

Take an extra turn after this one.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

When Duncaster Nightwatcher enters and whenever you cast a noncreature spell, create a 1/1 colorless Human creature token.
Whenever you attack with three or more creatures, return target noncreature, nonland card with mana value 3 or less from your graveyard to your hand.

Target player chooses a creature they control, then returns all other creatures they control to their owners' hands.

Counter target permanent spell.

Draw two cards.
You may cast an instant or sorcery spell with mana value 3 or less from your hand or graveyard without paying its mana cost. If that spell would be put into a graveyard, exile it instead.

When Hand of Dominion enters, tap target creature an opponent controls. It doesn't untap during its controller's next untap step.
At the beginning of your upkeep, if your fealty to Islands is five or greater, transform Hand of Dominion. (Each Island you control counts towards your fealty to Islands.)