msem-instigator

Flash
When Hexfang Ascetic enters, return target spell to its owner's hand.

Whenever you draw a card, put a +1/+1 counter on Highborn Meditant.

First mate—Each nonland card in your starting deck has the same name as exactly one other card in your starting deck. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Vigilance
Whenever you cast a spell with the same name as a card in your graveyard, draw a card.

Hollow Queen can't be blocked by tokens.
Whenever Hollow Queen deals combat damage to a player or planeswalker, you may remove a counter from a permanent you control. If you do, put a +1/+1 counter on target creature you control.

Trample
Hollow Survivor's power and toughness are each equal to the number of cards in your hand.
Whenever Hollow Survivor deals combat damage to a player, draw a card.

When Hooded Inquirers enters, draw two cards.

Create a token that's a copy of target creature you control, except it has base power and toughness 2/2.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Flying, vigilance
At the beginning of your end step, if a creature you control dealt combat damage to an opponent this turn, put a +1/+1 counter on Horizon Prophet.

Whenever you tap an artifact or land for mana, add one mana of any type that permanent produced.

You may have Imaginative Dreamer enter as a copy of any creature on the battlefield. When it does, it stops being a copy.

You may reveal a creature card you own from outside the game and put it into your hand.
The next spell you cast this turn may be cast as though it had flash. Exile Impromptu Escapade.

Draw two cards, then you may put a land card from your hand onto the battlefield. If you cast In Dire Straits during your turn for its reconstruct cost, create X 3/2 green Horror creature tokens, where X is the number of lands you control.
Reconstruct {8}{G}{G}{U}{U} (You may cast this from your graveyard for its reconstruct cost reduced by the mana value of a permanent you sacrifice as you cast it this way. Then exile this.)

When Inspired Blade enters, if you control another Warrior, draw a card.

Whenever Instability Elemental enters or you draw a card except during your draw step, target creature gets +1/+1 until end of turn.

When Irrigation Trawler enters, reveal the top card of your library. If that card was a land card, put that card into your hand. Otherwise, create a colorless artifact token named Lotus Petal with “{T}, Sacrifice this artifact: Add one mana of any color.”

Spirited (When this creature enters, you may activate one of its activated abilities without paying its cost.)
{1}, {T}: Choose a nonland card name. Reveal the top three cards of your library and put each revealed card with that name into your hand. Put the rest into your graveyard.

Prismatic — Whenever you cast a multicolored spell, if you cast it from your hand, look at the top four cards of your library. You may cast a multicolored card that's different colors and costs less from among them without paying its mana cost. Put the rest on the bottom of your library in any order.

As an additional cost to cast this spell, return any number of creatures you control to their owner's hands. This spell costs {2} less to cast for each creature returned in this way.
Trample, ward {3}
Keepers of the Rundfora's power and toughness are each equal to twice the number of cards in your hand.

[+1]: Until your next turn, up to one target creature gets -9/-0.
[–2]: Reveal the top four cards of your library. Put any number of cards with mana abilities from among them into your hand, then put the rest on the bottom of your library in any order.
[–6]: You get an emblem with “At the beginning of each opponent's end step, gain control of target creature that player controls.”

Concord — You may cast this spell as though it had flash if there are four or more card types among permanents you control.
When Krill-Clan Guardian enters, it fights up to one other target creature. If that creature would die this turn, return it to its owner's hand instead.

Indestructible
As long as your devotion to green and blue is less than seven, Kruphix isn't a creature.
Spells you cast from anywhere other than your hand cost {2} less to cast.
At the beginning of your upkeep, if there are no cards exiled with Kruphix, exile the top card of your library face down. You may look at and play that card for as long as it remains exiled.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
{1}{G}{U}: Reveal the top card of your library. If it's a land card, you may put it onto the battlefield. If you didn't put that card onto the battlefield and you're in a renaissance, put it into your hand.

[+1]: Until your next turn, another target non-Aura permanent becomes a land with “{T}: Add one mana of any color” and loses all other card types and abilities.
[–2]: Create a 1/1 blue Spirit creature token with flying. Draw a card.
[–7]: You get an emblem with “At the beginning of your end step, create a 6/6 green and blue Spirit Warrior creature token with trample named Echo of Lhosei.”

Rouse 3. Untap target land. It gains flying and haste until end of turn if it's a creature. (Distribute three +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

When Liturgy of Brine enters, draw a card, then you may put a land card from your hand onto the battlefield tapped.
Invocation — Whenever you spend four or more mana to cast a spell or activate an ability during your turn, Liturgy of Brine becomes a 5/5 Kraken Horror creature in addition to its other types until end of turn.