msem-instigator

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
Tap target creature. If this spell's tithe was paid, exile that creature.

Prismatic — Whenever you cast a multicolored spell, create a 1/1 blue Bird creature token with flying. It gains haste until end of turn.
Whenever three or more creatures you control deal combat damage to a player, draw a card.

Enchant land
Enchanted land has “{T}: When target creature deals combat damage to an opponent this turn, draw a card. Activate only as a sorcery.”

Whenever Passionate Painter becomes untapped, you may discard a card. If you do, draw a card, then transform Passionate Painter.

Exile the top card of your library, a card from your hand, and a card from your graveyard. Put one of the exiled cards on top of your library, one into your hand, and the other into your graveyard.

{T}: Add {C}.
{T}, Pay 1 life: Add {R}.
{4}{R}, {T}, Sacrifice Path of Fire: Path of Fire deals 3 damage to target player or planeswalker. Activate only as a sorcery.

(Choose only one work as a sorcery to add its ability.)
When Path of the Outsider enters, return target creature to its owner's hand, then each opponent sacrifices a creature.
{2}{U}: Evanescence
{0}: Target creature phases out. Activate only during your turn and only once each turn.
{2}{B}: Anguish
Whenever a creature attacks you, it gets -1/-1 until end of turn.

Exile target creature you don't control. Its controller may search their library for a creature card with a different name, reveal it, put it into their hand, then shuffle.

Enchant opponent
When Pathless Shallows enters, exile target creature enchanted player controls until Pathless Shallows leaves the battlefield.
Enchanted player can't cast spells with the same name as the exiled card.

Defender
Whenever Patient Cocoon is dealt damage, create a 1/1 green Insect creature token.

Whenever an opponent casts a spell, sacrifice Patient Orchestration. If you do, look at the top X cards of your library, where X is that spell's mana value. Put up to two of them into your hand and the rest on the bottom of your library in any order.

Prowess
Whenever Paul attacks, look at the top card of your library. If it's a noncreature card, you may cast it. If you don't cast the card, you may put it into your graveyard. (You still pay the spell's cost.)

(Add a quest counter as this enters. Sacrifice after 3.)
Once each turn, when you cast a creature spell, you may add a quest counter.
Return up to X target creatures you control to their owner's hand, where X is the number of quest counters on Paw Valley Expedition.
Create a 1/2 white Bear Monk creature token with vigilance and a 2/1 white Bear Knight creature token with first strike.

{R}: Paw Valley Wildclaw gets +1/+0 until end of turn. When this makes its power exactly 4, add {R}{R}{R}.

Flying
At the beginning of your upkeep, reveal the top card of your library. If it's a creature card, create a 1/1 blue Bird creature token with flying.

Target opponent reveals their hand. You choose a nonland card from it. If you can't, they discard a card. Otherwise, that player discards a card, then if they didn't discard the chosen card, you create a tapped Treasure token. (It's an artifact with “{T}, Sacrifice this artifact: Add one mana of any color.”)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When Paygan Archer dies, it deals damage to target player or planeswalker equal to its power.

Paygan Firebinder gets +1/+0 for each Satrapy you control.
Satrapycycling {2} ({2}, Discard this card: Search your library for a Satrapy card, reveal it, put it into your hand, then shuffle.)

Whenever you draw a card except during your draw step, you gain 1 life.
{5}{U}: Draw a card.

(Choose only one work as a sorcery to add its ability.)
When Peacetime Murals enters, draw three cards and you gain 3 life.
{2}{G}: Grow as Two
Whenever you activate an ability of a creature you control, create a token that's a copy of that creature except it isn't legendary. This ability triggers only once each turn.
{2}{U}: A Better Mankind
Whenever a creature you control enters, you may activate one of its abilities without paying its costs. This ability triggers only once each turn.

Flying

Scry 3.
Monument {1}{U}{U} (You may cast this transformed from your graveyard for its monument cost. Exile it if it would leave the battlefield or not resolve.)

When Peeto enters, scry 2.
Whenever a Scout you control attacks, choose land or nonland, then look at the top card of your library. If it's a card of the chosen kind, you may reveal it and draw a card.

When Pelt's Refuge enters, if {G} was spent to cast it, distribute two +1/+1 counters among creatures you control.
Whenever a creature you control dies, draw a card.

Equipped creature gets +1/+1 for each creature you control.
Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)