msem-instigator

Destroy target tapped creature.
Orchestrate {W} (You may exile this card from your hand anytime you could cast a sorcery for its orchestrate cost. When you next resolve a spell, you may cast this from exile without paying its mana cost.)

Target creature +3/+3 and gains trample until end of turn.
Leitmotif (If you cast this spell from your hand, exile it as it resolves. When you next cast a spell that shares a color with this card, you may cast this from exile without paying its mana cost.)

For each counter on each permanent you control, you may put another counter of that kind on that permanent.
Draw a card.

When Growth Paradigm enters, conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)
Once each turn, when you cast a sorcery spell, you may create an X/X green Mutant creature token, where X is that spell's mana value.

Once each turn, when Groz, the Nightshaper enters or you attack with one or more Horrors, you may return target nonlegendary creature card from your graveyard to your hand. Then if Groz isn't a token, create a token that's a copy of that creature card.
{2}{B}{B}, Discard Groz: Create a token that's a copy of Groz, the Nightshaper, except it's 4/4 and isn't legendary. Activate only as a sorcery.

Enchant creature
Enchanted creature gets +3/+3 and has trample.

Gruff Clutch enters with six +1/+1 counters on it.
{R}, Remove a +1/+1 counter from Gruff Clutch: It deals 1 damage to any target.

When Gruff Smith enters, you may destroy target artifact. If you do, that artifact's controller creates a colorless Equipment artifact token with “Equipped creature gets +1/+1” and equip {1}.
Recite {1}{R} (You may cast this creature from your graveyard for its recite cost. If you do, exile it when it enters or if it would leave the battlefield.)

Other creatures you control that are Knights or have Adventures get +1/+1.

{T}: Add {C}.
{T}, Exile two cards from your graveyard: Add {R} or {G}.

Guang Shrine enters tapped.
{T}: Add {G} or {W}.
{G/W}, {T}, Sacrifice Guang Shrine: Put a +1/+1 counter on target creature you control. Activate only as a sorcery.

Flying
Each spell costs {2} more to cast except during its controller's turn.

Guardian of Dusk gets +X/+X, where X is the amount of life you've lost this turn.
When Guardian of Dusk has power 13 or greater, sacrifice it. If you do, you gain life equal to its power.

When Guardian of Lost Truths enters, if a library has twenty or fewer cards left in it, draw two cards. Otherwise, target player mills five cards.

Flying
Whenever you cast a cryptic spell, Guardian of Mysteries becomes a 4/4 Sphinx creature in addition to its other types until end of turn. (Artifacts, enchantments, and modal spells are cryptic.)
{1}, {T}: Scry 2.

Renown 1 (When this creature deals combat damage to a player, if it isn't renowned, put a +1/+1 counter on it and it becomes renowned.)

Creature spells you cast cost {1} less to cast.
Whenever you attack, target attacking creature you control gets +1/+1 until end of turn. If it's legendary, put a +1/+1 counter on it instead.

Untap up to two permanents you control during each other player's untap step.

Flying, haste
Whenever Guardian of the Devout attacks or blocks, other creatures you control gain indestructible until end of 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.

First strike
Whenever Guardian of the Eclipse attacks, you may exile another target attacking creature you control, then return it to the battlefield under your control tapped and attacking.

When Guardian of the Wurm enters, create a 6/6 green Wurm creature token with trample.

Target permanent gains hexproof and indestructible until end of turn. Scry 1.

Put up to X target noncreature, nonland permanents on top of their owners' libraries in any order.
You gain 6 life.