msem-instigator

Strident Retainer's power and toughness are each equal to the number of creatures you control.
Art of war — At the beginning of your end step, if Strident Retainer dealt damage to an opponent this turn, create a 1/1 colorless Samurai creature token.

Creatures you control get +1/+1 until end of turn.
Inscribe {2}{W} ({2}{W}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Whenever you gain life, put a +1/+1 counter on Wayfaring Pilgrim.

Create a 1/1 white Spirit creature token with flying.
Whenever a nontoken creature you control dies, you may pay {W} and exile Whispered Wishes from your graveyard. If you do, create a 1/1 white Spirit creature token with flying.

Whenever one or more creatures you control attack, you may put a progress counter on Worldwide Reach.
[PROGRESS 2+] Whenever you cast a noncreature spell, creatures you control get +1/+1 until end of turn.
[PROGRESS 4+] Whenever you cast a noncreature spell, creatures you control gain lifelink until end of turn.

Target player mills X cards, where X is two plus the number of cards named Against the Waves in your graveyard. Draw a card, then conjure three cards named Against the Waves and shuffle them into your main library.

Whenever Arcane Duelist becomes tapped, target instant or sorcery card with mana value 1 in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it.)

Create a 1/1 blue Otter creature token with “Whenever this creature deals combat damage to a player, draw a card.”
Wanderlust — If you control four or more differently named lands, create two of those tokens instead.

Flash
When Cane Dancer enters the battlefield, you may cast target blue instant or sorcery card with mana value 2 from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

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.

Each player shuffles their hand and graveyard into their library. Then each player draws seven cards. If you didn't control a blue legendary creature or planeswalker as you cast this spell, discard three cards. Exile Entelan Erasure.

Prowess
Wizardcycling {1}{U} ({1}{U}, Discard this card: Search your library for a Wizard card, reveal it, and put it into your hand, then shuffle.)

Return all creatures with toughness 3 or less to their owners' hands.
Investigate three times. (To investigate, create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Whenever you cast an instant or sorcery spell, look at the bottom card of your library. You may manifest it. If you don't, put it into your hand. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Flying
Concord — When Judicious Djinni enters the battlefield, if there are four or more card types among permanents you control, return target instant or sorcery card from your graveyard to your hand.

Counter target noncreature spell.

Choose one —
• Counter target spell unless its controller pays {X}.
• Counter target spell with mana value X.

Return target creature to its owner's hand.
Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, draw a card.

Counter target spell unless its controller pays {2}.
Wanderlust — If that spell has mana value 2 or less and you control four or more differently named lands, counter that spell.

Draw a card, then draw cards equal to the number of cards named Sea Cache in your graveyard.

Flash
When Seabreen Nullmage enters the battlefield, counter target activated or triggered ability. (A triggered ability uses the words “when,” “whenever,” or “at”. Mana abilities can't be targeted.)

Whenever you cast a spell, sacrifice a permanent and draw a card.
Exile three cards from your graveyard: Counter target noncreature spell unless its controller pays {1}.

Return target nonland permanent to its owner's hand.
Inscribed creature gets +1/+1 and has flying.
Inscribe {3}{U} ({3}{U}: Exile this card from your hand inscribed on a creature you control. Whenever that creature attacks, its controller may cast a copy of the inscribed card without paying its mana cost. Inscribe only as a sorcery.)

Prowess
When Snowline Ascetic enters the battlefield, you may put target instant or sorcery card from your graveyard on top of your library.

Enchant nonland permanent
Vanishing 3 (This permanent enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
You control enchanted permanent.