Temple of Enlightenment enters tapped.
When Temple of Enlightenment enters, scry 1.
{T}: Add {W} or {U}.

Temple of Epiphany enters tapped.
When Temple of Epiphany enters, scry 1.
{T}: Add {U} or {R}.

Temple of Malady enters tapped.
When Temple of Malady enters, scry 1.
{T}: Add {B} or {G}.

Temple of Malice enters tapped.
When Temple of Malice enters, scry 1.
{T}: Add {B} or {R}.

Temple of Mystery enters tapped.
When Temple of Mystery enters, scry 1.
{T}: Add {G} or {U}.

Temple of Origins enters tapped unless you control two or fewer other lands.
As Temple of Origins enters, choose two colors.
{T}: Add one mana of one of the chosen colors.
If you would add mana of a color that wasn't chosen, add {C} instead.

Temple of Plenty enters tapped.
When Temple of Plenty enters, scry 1.
{T}: Add {G} or {W}.

Temple of Silence enters tapped.
When Temple of Silence enters, scry 1.
{T}: Add {W} or {B}.

Temple of Triumph enters tapped.
When Temple of Triumph enters, scry 1.
{T}: Add {R} or {W}.

Flash
When Tempo Arbiter enters, up to one target creature gets -X/-0 until end of turn, where X is the number of artifacts you control.

Deathtouch
{G}: Temptuous Crooner gains reach until end of turn.

When Tenki enters, it acclimates.
You can't sacrifice Weather enchantments.
{W}{U}{B}{R}{G}, {T}: Tenki acclimates. This ability costs one mana of any color less to activate for each Weather you control.

At the beginning of your end step, you may pay {2}. If you do, you gain 2 life, then target opponent may pay {2}. If they don't, you draw a card.

Tenuous Edge enters tapped.
{T}: Add {U} or {R}.
{T}, Discard another card named Tenuous Edge: Draw a card.

As long as you've cast an instant spell this turn, Teqien Overseer gets +1/+1 and has hexproof.
As long as you've cast a sorcery spell this turn, Teqien Overseer gets +1/+1 and has flying.

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

When Terror of Olantin enters, create a number of 1/1 blue Tentacle creature tokens equal to your devotion to green.

Menace
At the beginning of combat on your turn, if you've spent at least five mana to cast spells this turn, put two +1/+1 counters on Terror of Whitecliff Pass.

Teslahammer Giant enters with a +1/+1 counter on it.

Test Subject Alpha enters with a +1/+1 counter and a trample counter on it.
At the beginning of your upkeep, you may move a counter from Test Subject Alpha onto another creature.

{T}: Add {C}.
Spellcharge 4

Enchant player
Enchanted player can't gain life.
At the beginning of your upkeep, enchanted player loses 1 life and you gain 1 life.

Flash
Whenever Thassa's Tideshaper attacks, defending player mills two cards and you draw a card. Then discard a card unless defending player has eight or more cards in their graveyard.

Defender, trample
At the beginning of combat on your turn, if you have at least 3 life more than than your starting life total, Thawing Yeti loses defender until end of turn. Otherwise, you gain 2 life.

Flash
When The Aqua Crew enters, mill six cards, then you gain 1 life for each card type among cards in your graveyard.
Whenever you cast a spell from your graveyard, you may have target nonland permanent become an Island land. This ability triggers only once unless you control a creature named Warden of Depths.