msem-instigator

When Raikai Seafarer enters, you may search your library for up to three cards named Raikai Seafarer, reveal them, put them into your hand, then shuffle.

Whenever a land creature you control deals combat damage to a player, put a +1/+1 counter on it.
{1}{G}: Put a +1/+1 counter on target land you control. It becomes a 0/0 Elemental creature that's still a land.

Encourage ({T}: Another target creature you control gets +1/+1 until end of turn. Encourage only as a sorcery.)
Whenever a creature deals combat damage to a player, if it was encouraged by Veteran Horncaptain this turn, exile the top three cards of your library. You may put a permanent card from among them onto the battlefield.

Vigilance
{W}{U}: Each creature you control assigns combat damage equal to its toughness rather than its power this turn.

Instant and sorcery spells you cast cost {1} less and an additional 1 life to cast.
You control your opponents while instant and sorcery spells you control are resolving.

Indestructible
As long as your devotion to blue and black is less than seven, Phenax isn't a creature.
Whenever one or more cards are put into your graveyard from your hand or library, you may return one of those cards to your hand. Do this only once each turn.

First mate—Each nonland card in your starting deck targets or has an ability that targets. (If this card outside the game is your chosen first mate, you may swap it with a card in your opening hand.)
Hexproof
Whenever a permanent you don't control becomes the target of a spell or ability you control, create a token that's a copy of that permanent.

Haste
Whenever Shala's Phantasm attacks, you may sacrifice a creature. If you do, Shala's Phantasm deals 3 damage to any target.

{T}, Sacrifice a land: Untap up to three target lands.

Whenever a creature attacks, if its toughness is greater than its power, untap it.

Vigilance
Whenever Purgeward Adept blocks or becomes blocked, it gets +1/+0 until end of turn.

When Seeker of Horizons enters, reveal the top three cards of your library. You may put a permanent card from among them into your hand. Put the rest on the bottom of your library in any order.
Recite {1}{U} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Flying
At the beginning of your upkeep, if you control three or more enchantments, create a 1/1 white Soldier creature token.

Wither (This deals damage to creatures in the form of -1/-1 counters.)
When you unveil Bramble Quickling, you may have it fight target creature.

Double strike
{1}{R}{W}: Target creature gains double strike until end of turn. Activate only if Bravery is in your graveyard.

At the beginning of each opponent's upkeep, choose one —
• At the beginning of the next end step, if you haven't been dealt combat damage this turn, Lord Dalehorn the Iron-Handed deals 3 damage to that player.
• At the beginning of the next end step, if that player hasn't cast a creature spell this turn, Lord Dalehorn the Iron-Handed deals 3 damage to that player.

Flying, deathtouch
Whenever you cast an instant or sorcery spell, return target creature card from your graveyard to the battlefield.

{T}, Sacrifice a creature: When you next cast an instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.

At the beginning of combat on your turn, for each permanent type, aetherize up to one target permanent you control of that type. (To aetherize, create a token that's a copy of it, then exile that token.)

At the beginning of your upkeep, you may exile a card from your hand with a knowledge counter on it. If you do, draw a card. Then you may have Professor Adelia become a copy of any permanent card you own in exile with a knowledge counter on it, except it has this ability.

({T}: Add {W}.)
Bygone Guardian enters tapped.
Vigilance
{2}{W}{W}: Bygone Guardian becomes a creature in addition to its other types until end of turn.

Flying

At the beginning of your end step, you may pay {W}. If you do, exile target creature you control, then return that card to the battlefield under your control.

Flying, vigilance
Whenever a land you control enters, create a 2/2 green Ox creature token.
{3}{W}, Tap three untapped Oxen you control: Put a +1/+1 counter on each creature you control.

Auras and Equipment you control have indestructible.
Whenever Bearidge Marshall attacks, you may create a white Aura enchantment token named Arrest attached to target creature. It has enchant creature and “Enchanted creature can't attack or block, and its activated abilities can't be activated.”