msem-instigator

Whenever a nontoken Satrapy you control enters, create a token that's a copy of it, except it's a 1/1 blue Spirit creature in addition to its other types.
Tap seven untapped Satrapies you control: Exile cards from the top of your library until you exile a nonland card. You may cast that card without paying its mana cost.

When Rune-Scribe's Apprentice enters, target player mills four cards.

You may reveal the second card you draw each turn as you draw it. When you do, create a 2/2 blue Avatar Wizard creature token with prowess if it's a creature card. If it's a land card, create a Treasure token. If it's a noncreature, nonland card, Steward of Second Sphere can't be blocked this turn.
{3}{W/U}{W/U}: Scry 2.

Menace

Flying, lifelink
When Timestream Sentinel enters, put two +1/+1 counters on each other creature named Timestream Sentinel you control.

Flash
If a card or token would be put into an opponent's graveyard from anywhere, exile it instead.

Inspirited Duelist has double strike as long as it has a +1/+1 counter on it.

When Anran's Radical enters, you may look at the top six cards of your library, then you may discard a card. If you do, reveal a card from among them with mana value 5 or greater or with {X} in its mana cost and put it into your hand. Put the rest on the bottom in a random order.
{T}: Add {C}.

Return target creature card from a graveyard to the battlefield under your control. Post a bounty on that creature. (Put a bounty counter on that creature. It has “When this creature dies, each opponent draws a card” as long as it has a bounty counter on it.)

{2}, {T}: Put a +1/+1 counter on target creature you control.
{2}, {T}, Sacrifice Inspiring Effigy: Put a +1/+1 counter on each creature you control.

{T}: Untap target land.
{4}{G}: This creature gets +3/+3 until end of turn.

Return target non-Horror creature to its owner's hand. Scry 1.

Whenever Solemn Stag perseveres, put two +1/+1 counters on it. (A creature perseveres when it survives damage.)

Destroy target creature or planeswalker. Create a Treasure token.

Enchant creature
Enchanted creature has base power and toughness 8/8.

Reprise {4}{U} (As you cast an instant or sorcery spell, you may exile one card with reprise from your graveyard and pay its reprise cost. If you do, add its effects to that spell.)
Target player mills a card. Create X tapped 2/2 black Zombie Pirate creature tokens, where X is the total number of cards milled by this spell.

{1}{G}: Create a 1/1 colorless Construct artifact creature token.
{2}{G}{G}: Target creature you control becomes 4/4. (This lasts indefinitely.)
{4}{G}{G}{G}{G}: Put four +1/+1 counters on each creature you control with power 4 or greater.

When Academy Renegade enters, it deals damage to target creature you don't control equal to the number of Wizards you control.
Whenever Academy Renegade attacks, it deals damage to defending player equal to the number of Wizards you control.

Lone Hunter has indestructible as long as it has attacked alone this turn.
Whenever Lone Hunter becomes the target of a spell or ability you control, if it cost one or more mana to cast or activate, you may pay {1}. If you do, draw a card.

Remove all counters from all permanents and exile all tokens.

Target creature gets -1/-1 until end of turn.
Flashback {1}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

This spell can't be countered.
Creatures you control have ward {2}. (Whenever one becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
When Natural Philosopher enters, you gain 2 life for each creature you control with power 4 or greater.

Idyllic Oasis enters tapped unless you control a Plains.
{T}: Add {G} or {U}.

Vivid Crag enters tapped with two charge counters on it.
{T}: Add {R}.
{T}, Remove a charge counter from Vivid Crag: Add one mana of any color.

As Protean Jar enters, choose a creature type.
Each creature you control of the chosen type enters with an additional +1/+1 counter on it.
{2}: If Protean Jar isn't a creature, it becomes a copy of target creature you control of the chosen type, except it has Protean Jar's other abilities. Activate only as a sorcery.