msem-instigator

Enchant creature
When Sylvan Majesty enters the battlefield, search your library for a Forest card, put it onto the battlefield tapped, then shuffle.
Enchanted creature gets +3/+3.

(As this Discovery enters and after your draw step, add a progress counter. Stop after you've discovered.)
Archive 6 (As this enters the battlefield, shuffle the top six cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Draw a card from each of your libraries.
discover — When you draw the last card from the archived library, create a 4/4 blue Sphinx Wizard creature token with flying.

Draw three cards, then discard a card unless you exile two cards from your graveyard.

Flying
When Tattered Wisp enters the battlefield, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Exile target permanent, then return that card to the battlefield under its owner's control.
Draw a card.

When you unveil Tempest Termagant, you may put target land on top of its owner's library.

Take an extra turn after this one. During that turn, you may look at and play the top card of your library.
Exile Temporotomy.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

As The Mistake enters the battlefield, choose a card name.
Activated abilities of sources with the chosen name can't be activated unless they're mana abilities.
Unveil {5} ({5}: Transform this. Unveil only as a sorcery.)

Thriving Bluff enters the battlefield tapped.
As Thriving Bluff enters the battlefield, choose a color other than red.
{T}: Add {R} or one mana of the chosen color.

Thriving Grove enters the battlefield tapped.
As Thriving Grove enters the battlefield, choose a color other than green.
{T}: Add {G} or one mana of the chosen color.

Thriving Heath enters the battlefield tapped.
As Thriving Heath enters the battlefield, choose a color other than white.
{T}: Add {W} or one mana of the chosen color.

Thriving Isle enters the battlefield tapped.
As Thriving Isle enters the battlefield, choose a color other than blue.
{T}: Add {U} or one mana of the chosen color.

Thriving Moor enters the battlefield tapped.
As Thriving Moor enters the battlefield, choose a color other than black.
{T}: Add {B} or one mana of the chosen color.

Target permanent gains indestructible and hexproof until end of turn. Remove all -1/-1 counters from it.

Trample

You draw a card, lose 2 life, then create a Vial token. (It's an artifact with “{1}, Sacrifice this and another permanent: Draw a card. Activate only during your turn.”)

Destroy target creature with power less than or equal to the number of creature cards in your graveyard.

When Troubled Homesteader dies, draw a card.

Exile target creature. Its controller reveals cards from the top of their library until they reveal a creature card. The player puts that card onto the battlefield, then shuffles all other cards revealed this way into their library.

Activated abilities of creatures you control cost up to {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

Exile target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Search your library and/or graveyard for a green creature card with mana value X or less and put it onto the battlefield with an additional -1/-1 counter on it. If you search your library this way, shuffle.

Hexproof
When Uncharted Leviathan enters the battlefield, target creature can't be blocked this turn.

Creatures your opponents control get -2/-0 until end of turn.
Draw a card.