msem-instigator

{T}: Add one mana of any color.
{X}: Terracotta Idol becomes a Spirit artifact creature with base power and toughness X/X until end of turn. Activate only as a sorcery.

You may have Terracotta Legion enter 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.

{T}: Add one mana of any color. Spend this mana only to cast a creature spell or activate an ability of a creature.
Whenever a creature you control becomes a Demigod or God, untap Terracotta Sage and it becomes a 4/4 Dragon with flying until end of turn.

When Terraformer's Globe enters, draw a card.
{T}: Target land you control becomes the basic land type of your choice until end of turn.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Search your library for up to two land cards, put them onto the battlefield tapped, then shuffle.
5 | Create an X/X blue Spirit creature token, where X is the number of differently named lands you control.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying
{T}: Target land you control becomes the basic land type of your choice until end of turn.

Target creature you control gets +X/+X until end of turn, where X is the number of lands you control.

Target player loses 3 life. Creatures you control gain menace until end of turn.

Choose target opponent. Scry 3, then reveal the top card of your library. The chosen player discards an amount of cards equal to that card's mana value. (To scry 3, look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Voracious 2 (As this enters, you may sacrifice up to two artifacts and/or creatures. This creature enters with that many +1/+1 counters on it.)
When Territorial Bear dies, you may return up to two target artifact cards from your graveyard to your hand.

Vigilance
When Territorial Camaar enters, you may sacrifice a land. If you do, search your library for a Desert card, put it onto the battlefield tapped, then shuffle.

Flying
Territorial Drake has hexproof as long as it's untapped.
Whenever Territorial Drake becomes tapped, scry 2.
Whenever Territorial Drake becomes untapped, draw a card.

Defender
Territorial Fangwurm may attack as though it didn't have defender as long as you've cast a cryptic spell this turn. (Artifacts, enchantments, and modal spells are cryptic.)

Voracious 2 (As this enters, you may sacrifice up to two artifacts and/or creatures. This creature enters with that many +1/+1 counters on it.)

Protection from nonblue
Whenever Terror of Palta Gorge attacks, exile another target nonblue creature until Terror of Palta Gorge leaves the battlefield.

Flying, first strike
Whenever Terror of Sunset Cliffs attacks, each player discards their hand and draws seven cards.
Whenever an opponent discards a card, Terror of Sunset Cliffs deals 1 damage to that player.

When Terror of the Ontarachie enters, choose one —
• Each player sacrifices a creature.
• Each player loses 5 life.

Kicker {4}{U}{U} (You may pay an additional {4}{U}{U} as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, create an 8/8 blue Kraken creature token with trample.

Return target creature you control and target creature you don't control to their owners' hands. Target player discards a card.
Coalesce {4}{U}{B} (You may cast this from your graveyard for {4}{U}{B}. If you do, it enters as a Horror creature after it resolves. Exile it if it would leave the battlefield or not resolve.)
Terrors of Cuxuri Trench can't block.

First strike
Tesqua Cohort enters with a +1/+1 counter on it if you control another creature with a +1/+1 counter on it.

When Tessellated Orb enters, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.
When Tessellated Orb dies, draw a card.

Puzzlebox (Begin the game with this and another card you own from outside the game in the command zone, locked. That card is face down until you unlock this.)
{0}: Unlock Tesseract Conjecture. If the revealed card shares a mana value with three or more permanents you control, cast it without paying its mana cost.

Create an X/X green Mutant creature token.
Draw a card.

Spells you cast without trial have trial 1. (As you cast a spell with trial 1, an opponent of your choice may pay 1 life. If they don't, they fail the trial.) (As you cast this spell, an opponent of your choice may pay 1 life. If they don't, they fail the trial.)
Whenever an opponent fails a trial, you may discard a card. If you do, draw a card.