msem-instigator

When Temporal Rift enters the battlefield, exile target creature an opponent controls until Temporal Rift leaves the battlefield.
Whenever you aetherize, you may return Temporal Rift to its owner's hand.

This spell costs {3} less to cast if it targets a creature you control.
Exile target creature, then you may return it to the battlefield under its owner's control. Otherwise, put it on top of its owner's library.

Flying
When Tengu Skyguard enters the battlefield, return a permanent you control to its owner's hand.

You may have Terracotta Legion enter the battlefield as a copy of any creature with mana value 1 or less you control, except it's an artifact in addition to its other types.

This spell costs {1} less to cast for each artifact you control.
Gain control of target creature until end of turn. Untap that creature. It gains menace and haste until end of turn.

Spirited
{3}, {T}: Create a colorless Equipment artifact token with “Equipped creature gets +1/+1” and equip {1}. Attach that token to a creature you control.

The Last Sacred Gate enters the battlefield tapped.
While you're searching your library, you may play The Last Sacred Gate from your library.
{T}: Add {C}.

When The Moon Rises enters the battlefield, exile all opponent's graveyards.
At the beginning of your upkeep, each opponent loses 1 life.

Once each turn, when another permanent enters the battlefield under your control, you may create a token that's a copy of that permanent, except it has no mana cost.

Flying, haste
Thermal Surger can't block.
When Thermal Surger enters the battlefield, you may sacrifice a land or exile a land card from your graveyard. If you do, put a +1/+1 counter on Thermal Surger.

Target opponent reveals their hand. You choose a nonland permanent card from it. That player discards that card.

Target creature gets +1/+1 until end of turn for each creature you control.
Inscribe {3}{R}

Flash
When Threadspinner enters the battlefield, untap each enchanted permanent you control. Enchanted creatures you control get +1/+1 until end of turn.

You may sacrifice a land. If you do, search your library for a land card, put that card onto the battlefield, then shuffle.
Inscribe {3}{G}

Whenever equipped creature attacks, you may unattach Throwing Stones. When you do, target creature can't block this turn.
Equip {3}

Target creature gets +1/+1 for each creature you control and gains flying and vigilance until end of turn.

Flying
Spirited
{3}{R}{R}, {T}: Exile an instant card with mana value 3 or less from your graveyard, then cast a copy of a card exiled with Thunderlash Mystic without paying its mana cost.

Creature tokens you control get +1/+1.
Whenever Thyra, Winter's Warden enters the battlefield or attacks, you may pay {1}{G/W}. If you do, create Bruga, a legendary 2/2 green and white Wolf creature token.

As Timber Range enters the battlefield, you may pay 2 life. If you don't, Timber Range enters the battlefield tapped.
{T}, Sacrifice Timber Range: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.

Timeless Shrine enters the battlefield tapped.
{1}, {T}: Add {G}{G} or {W}{W}.

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

Flash
Enchant creature
Enchanted creature gets +1/+1 and has first strike.

Enchant creature
Spirited
{1}: Enchanted creature can't attack or block this turn.

Exile up to two target artifacts, creatures, and/or enchantments you control. Return those cards to the battlefield under your control at the beginning of the next end step.

Target player gets a poison counter.
Draw a card.