msem-instigator

Enchant creature
Enchanted creature gets +2/+0 and has first strike.

Harness (You may tap a creature you control as you cast this spell. If you do, reduce this spell's mana cost by that creature's power.)
Put two +1/+1 counters on target creature. If this spell was harnessed, also put a +1/+1 counter on the creature that harnessed it.

Sycophantic Aristocrat gets +2/+1 as long as you control another Noble.

Whenever you create one or more creature tokens, you may pay {1}{G/W}. If you do, put a +1/+1 counter on Sylshal, Life's Gyre and on each creature token you control.

Vigilance
Whenever a legendary creature enters the battlefield under your control, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

When Sylvan Explorer enters the battlefield, reveal the top card of your library. If it's a land card, put it onto the battlefield tapped.

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.

Search your library for a land card, reveal it, put it into your hand, then shuffle.

Target creature gets +2/+2 until end of turn. Draw a card if that creature has a counter on it.

Reach
Whenever another creature enters, untap Sylvan Subversive.

Scry 2, then reveal the top card of your library. If it's a basic land card, put it onto the battlefield tapped. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

When Symbiotic Sprout dies, create two 1/1 green Saproling creature tokens.

Flying
Synchronous Hellkite enters the battlefield with a +1/+1 counter for each other artifact you control.
Sacrifice three artifacts: Return Synchronous Hellkite from your graveyard to the battlefield.

Menace, prowess

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Put a +1/+1 counter on each creature you control.
3 | Those creatures gain vigilance and deathtouch until end of turn.

Enchant creature
When Synergistic Curiosity enters the battlefield, create a 2/2 blue Rogue creature token.
Enchanted creature gets +1/+1 and can't be blocked by creatures with flying.

{T}, Sacrifice Synthetic Seedling: Choose a basic land type. Create a tapped colorless enchantment land token with the chosen type.

Augmented — When TD-3 Slyten Retriever enters the battlefield, if it's not a token and you've spent {W}{U}{B}{R}{G} to cast spells this turn, create a token that's a copy of it.
When TD-3 Slyten Retriever dies, draw a card and gain 3 life.

Whenever one or more creatures you control attack, create a 1/1 white Soldier creature token that's tapped and attacking.
{3}{W}: Creatures you control get +1/+1 until end of turn.

Up to two target creatures can't block this turn. Scry 1.

Whenever you attack, you may draw a card. If you do, discard a card.

Vigilance, reach
Tahti, Forged by the World gets +1/+1 for each other creature you control.
Other creatures you control get +1/+1.

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

Haste
Whenever Tailor of Terror attacks, you may exile a creature card from your graveyard. If you do, put a +1/+1 counter on Tailor of Terror.