msem-instigator

Flying
Chronicle (As this enters and after your draw step, add a lore counter. Stop after III.)
[Lore I-II] Draw a card, then discard a card.
[Lore III] Remove all lore counters from Astral Man-o'-War. Return up to one target creature you don't control to its owner's hand.

Prowess
Other Monks you control get +1/+1.
Whenever you cast a spell during another player's turn, untap each Monk you control.

Whenever Babbling Experiment or another creature you control enters, target player mills two cards.

If you would catalyze, catalyze twice instead. (The next spell you cast this turn costs {1} less to cast.)
You may pay an additional {2} as you cast a spell. If you do, reveal the bottom card of your library. You may put it into your graveyard or on top of your library.

Flash
Whenever you draw a card during an opponent's turn, you get a glory counter. (You lose glory counters before life. A player with ten or more glory counters wins the game.)

When Crinster Falconer enters, create a 1/1 blue Bird creature token with flying.

Whenever Ekebram the Scholar becomes untapped, draw a card.
Whenever you draw your third card each turn, you may transform Ekebram.

Hafiq the Wise has hexproof as long as you've cast a spell this turn.
{U}, Discard a card with mana value X: Counter target spell with mana value X.
{U}, Sacrifice another permanent with mana value X: Return target instant or sorcery card with mana value X from your graveyard to your hand.

Whenever you cast a noncreature spell, scry 1.
{3}{U}, Exile an instant or sorcery card from your graveyard: Draw a card.

Kindle 4—{4}{U}{U} ({4}{U}{U}, Exile this card from your graveyard: Create four 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

Marin Polgek, Academy Heiress has hexproof as long as you control three or more enchantments.
{1}{W/U}{W/U}: Create a token that's a copy of target enchantment you control.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Martoob Watershaper enters, tap target creature. It doesn't untap during its controller's next untap step.

Whenever Merfolk Visionary or another Merfolk creature you control enters, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Flying

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
Spells you cast from zones other than your hand cost {3} less to cast.

{1}{U}: Target creature can't be blocked this turn.

Untap all permanents you control during each other player's untap step.

{2/U}, {T}: Target creature gets -4/-0 until end of turn.

Noncreature, nonland permanents you control have hexproof.
Tap five untapped noncreature, nonland permanents you control: Scry 3, then draw three cards.

Tizzanier Tidehunter can't be blocked as long as you control another Merfolk.

Whenever a Wizard you control deals damage to a player, draw a card.

Hexproof
When Wary Watchkeeper enters, target player mills three cards.

Whenever Whitepeak Channeler deals combat damage to a creature, tap that creature. That creature doesn't untap during its controller's next untap step.

{2}{B}, Sacrifice a creature: Draw a card. You gain 1 life.

When Harpooned Bubbledomer enters, mill four cards.
Harpooned Bubbledomer gets +2/+0 and has menace as long as there are four or more card types among cards in your graveyard.