msem-instigator

Flying
Whenever you cast a noncreature spell, note its mana value.
When Strix of Dark Omens dies, draw a card and create a 1/1 blue Bird creature token with flying for each different number noted with it.

Bulwark — {2}{G}: Stronghold Recruit gets +2/+2 until end of turn. Activate only once each turn and only if you control a creature with toughness 4 or greater.

Flash
Enchant creature
Enchanted creature gets +1/+1 and has “Whenever this creature deals combat damage to an opponent, draw a card.”

Players can cast spells only during their own turns.
Each player can't cast more than one spell each turn.

Prowess
Art of war — At the beginning of your end step, if Student of Shigure dealt damage to an opponent this turn, you may draw a card, then discard a card.

Whenever Student of Winds attacks, upgrade target attacking creature. (Give it one of the listed counters it doesn't already have.)
• +1/+1
• Flying

When Student of the Scroll enters, scry 2.

Improve {G} ({G}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
Whenever an Elf you control dies, you may search your library for a land card, reveal it, put it into your hand, then shuffle.

Reveal the top four cards of your library. You may put one into your hand and the rest into your graveyard.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Return target nonland permanent to its owner's hand. If you control an artifact, draw a card.

Whenever a storied permanent you control enters, each opponent loses 2 life. (Enchantments and legendary permanents are storied.)

At the beginning of combat on your turn, if you control six or more lands, put a +1/+1 counter on target creature you control.

This spell costs {2} less to cast for each Horror you control.
Exile up to one target non-Horror creature.
Coalesce {8}{W} (You may cast this from your graveyard for {8}{W}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

This spell costs {1} less to cast and has flash as long as there are four or more card types among cards in your graveyard.
Draw two cards.

Lifelink

Engorge (As this enters, mill three cards, then exile a card from among the milled cards.)
At the beginning of your upkeep, if Subturgian Proliferator engorged a creature card, you may pay {3}{B}. If you do, create a black Zombie creature token with power equal to the engorged card's power and toughness equal to that card's toughness.

Subway Shambler can't be blocked by creatures with lesser power.
At the beginning of each end step, if you're horrific, put a +1/+1 counter on Subway Shambler. (You're horrific as long as you've sacrificed a permanent or discarded a card this turn.)

Switch each creature's power and toughness until end of turn.

Tithe (As you cast this spell, you may tap three artifacts and/or creatures you control.)
You may cast this spell as though it had flash if its tithe is paid.
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Enchant creature
Enchanted creature gets -3/-0 and can't block.

Flying
Whenever you honor a creature, create two 1/1 white Soldier creature tokens.
Whenever you condemn a creature, each opponent loses life equal to its power and you gain life equal to its toughness.

Vigilance
Sun's Own has indestructible as long as it's your turn.

Sun-Dappled Paragon enters with a +1/+1 counter on it for each other creature you control.
Whenever another creature you control enters, put a +1/+1 counter on Sun-Dappled Paragon.

Whenever another creature you control enters, Sunblessed Orator deals 1 damage to each opponent and you gain 1 life.