msem-instigator

When Thailen's Guard dies, you gain 2 life and scry 1. (To scry 1, look at the top card of your library. You may put that card on the bottom of your library.)

Destroy target creature with flying.

When Jobiah, Devoted Farmer enters, search your library for a land card, put it onto the battlefield tapped, then shuffle.
At the beginning of your upkeep, if you control six or more lands with different names, you may transform Jobiah.

Mentor (Whenever this creature attacks, put a +1/+1 counter on target attacking creature with lesser power.)
Whenever Ghostly Hounds mentors a creature, that creature can't be blocked this turn.

Whenever another nontoken creature you control enters, if it doesn't share a name with another creature you control or a creature card in your graveyard, put a +1/+1 counter on Guardian of the Divergent.

Destroy target land. Add {R}{R}.

Copy target spell twice. You may choose new targets for the copies. (A copy of a permanent spell enters as a token.)

Enchant creature you control
At the beginning of your upkeep, create a token that's a copy of enchanted creature.

Infiltrate (Whenever one or more attacking creatures you control aren't blocked, this creature gets +1/+1 until end of turn.)

Foretell {2}{R} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Attacking creatures get +2/+0 until end of turn. If this spell was foretold, those creatures also gain trample until end of turn.

Whenever you discard an instant or sorcery card, you may cast it from your graveyard. (You still pay its costs.)
Spells you cast from anywhere other than your hand cost {1} less to cast.

Prowess
Whenever High Rollers Croupier attacks, you may put a lore counter on a Saga you control.

{2}{G}: Target face-down creature you control becomes a Beast with base power and toughness 5/5 until end of turn.

Equipped creature gets +2/+1.
Equip multicolored creature {1}
Equip {2}

Whenever Recurring Abomination deals combat damage to an opponent, you may put target creature card with mana value 3 or less from a graveyard onto the battlefield under your control.
{4}{B}{B}: Return Recurring Abomination from your graveyard to the battlefield tapped.

This spell costs {2} less to cast if an opponent lost life this turn.
Destroy target creature.

When Sullen Bonecrusher enters, it deals damage to any target equal to the number of Warriors you control and you gain that much life.

Elf creatures you control get +2/+2 and gain trample until end of turn.
Elfcycling {2}{G} ({2}{G}, Discard this card: Search your library for an Elf card, reveal it, and put it into your hand, then shuffle.)

Foretell {3}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Each opponent discards three cards.

Search your library for three land cards with different names, reveal them, then shuffle. Put one of those cards onto the battlefield, one into your hand, and one into your graveyard.

You gain twice X life.
Kindle X—{X}{G}{G} ({X}{G}{G}, Exile this card from your graveyard: Create X 1/1 colorless Elemental creature tokens. Kindle only as a sorcery.)

This spell costs {1} less to cast for each creature you control that's in a pack. (Two or more creatures you control with equal power are in a pack.)

Flying
Whenever Carrier Pigeon attacks or blocks, target creature gains winnow until end of turn. (Damage dealt to it also causes its controller to lose that much life.)

Whenever you cast a white spell, create a 1/1 white Nymph creature token.

Exile target creature with mana value 2 or less.