msem-instigator

Flash
{1}{W}: Exile target creature that dealt damage to you this turn until The Shield leaves the battlefield.

For each creature, its owner puts it on the top or bottom of their library.

When Thoughtgrinder enters the battlefield, each player discards a card.
Unearth {1}{U}{B} ({1}{U}{B}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the end step or if it would leave the battlefield. Unearth only as a sorcery.)

Menace (This creature can't be blocked except by two or more creatures.)

Attacking creatures get +2/+0 until end of turn.
Armed — Equipped creatures you control get an additional +1/+0 until end of turn.

Vanishing 4 (This creature enters the battlefield with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
Remove a time counter from Tideshift Elemental: You may tap or untap target creature.

Kicker {X}{U} (You may pay an additional {X}{U} as you cast this spell.)
When Tidetwister Mage enters the battlefield, if it was kicked, return all other creatures with power X or less to their owners' hands.

Exile target creature, then return that card to the battlefield under its owners' control.

When Timecrafter Lafterii enters the battlefield, choose target permanent with one or more time counters on it, then put two time counters on it or remove two time counters from it.

Double strike (This creature deals both first-strike and regular combat damage.)
If three or more creatures are attacking you, you may cast Timely Commander as though it had flash.

If you have less life than an opponent, you gain 6 life. If you control fewer creatures than an opponent, create three 1/1 white Soldier creature tokens.

{X}{2}, {T}, Sacrifice Tinkerer's Tools: Sacrifice an artifact. If you do, search your library for an artifact card with mana value less than or equal to the sacrificed artifact's mana value plus X. Put it onto the battlefield, then shuffle.

Tizzanier Tidehunter can't be blocked as long as you control another Merfolk.

Creatures you control get +1/+1.
{3}{W}{W}, Sacrifice To a Bright Future: Put a +1/+1 counter on each creature you control.

When Tombstone Looter enters the battlefield, you may draw a card. If you do, discard a card.
Unearth {1}{U} ({1}{U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the end step or if it would leave the battlefield. Unearth only as a sorcery.)

As an additional cost to cast this spell, discard a card.
Draw two cards. Then if you cast another instant or sorcery spell this turn, draw a card.

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

Exile up to X target instant and/or sorcery cards with total mana value X or less from your graveyard. You may cast a copy of each card exiled this way without paying its mana cost. Exile Total Recall.

Whenever Toxic Lurker attacks, you may have target creature defending player controls get -2/-1 until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.)
When Trained Warhawk enters the battlefield, create a 1/1 white Soldier creature token.

{4}{W}{W}: Create a 4/4 white Angel creature token with flying.
{2}{W}{W}: Populate. (Create a token that's a copy of a creature token you control.)

When Traversing Bulkvine enters the battlefield, search your library for three land cards with different names and reveal them. An opponent chooses one of them. Put that card into your graveyard and the rest into your hand, then shuffle.

{B}: Treacherous Shade gets +1/+1 until end of turn.
{1}{B}{B}: Treacherous Shade gets +3/+3 until end of turn.

Prevent all combat damage creatures with flying would deal this turn. Creatures you control gain reach until end of turn.