Flash
Flying
When Threnody Singer enters the battlefield, target creature an opponent controls gets -X/-0 until end of turn, where X is your devotion to blue. (Each in the mana costs of permanents you control counts toward your devotion to blue.)

Thriving Heath enters the battlefield tapped.
As Thriving Heath enters the battlefield, choose a color other than white.
: Add or one mana of the chosen color.

When Thriving Ibex enters the battlefield, you get (two energy counters).
Whenever Thriving Ibex attacks, you may pay . If you do, put a +1/+1 counter on it.

Thriving Isle enters the battlefield tapped.
As Thriving Isle enters the battlefield, choose a color other than blue.
: Add or one mana of the chosen color.

When Thriving Turtle enters the battlefield, you get (two energy counters).
Whenever Thriving Turtle attacks, you may pay . If you do, put a +1/+1 counter on it.

At the beginning of your end step, if you're the monarch, put a +1/+1 counter on Throne Warden.

Whenever a player casts a black spell, you may pay . If you do, you gain 1 life.

, : Create a 1/1 white Soldier creature token. Create five of those tokens instead if you control artifacts named Crown of Empires and Scepter of Empires.

, Sacrifice an artifact: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

: Add .
, : Put a charge counter on Throne of Makindi.
, Remove a charge counter from Throne of Makindi: Add two mana of any one color. Spend this mana only to cast kicked spells.

At the beginning of your end step, each opponent loses life equal to the number of tapped creatures you control.

: Add .
, , Sacrifice Throne of the High City: You become the monarch.

Equipped creature gets +2/+0.
Whenever equipped creature attacks, you may sacrifice Throwing Knife. If you do, Throwing Knife deals 2 damage to any target.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Spells you cast have ripple 4. (Whenever you cast a spell, you may reveal the top four cards of your library. You may cast spells with the same name as that spell from among the revealed cards without paying their mana costs. Put the rest on the bottom of your library.)

Flying
Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flash
Flying
Spells you cast with converted mana cost 5 or greater cost less to cast and can't be countered.

Whenever you crank Thud-for-Duds, roll two six-sided dice. Thud-for-Duds deals damage to target creature equal to the difference between those results.

At the beginning of your upkeep, if you have five or more cards in hand, Thumbscrews deals 1 damage to target opponent or planeswalker.

Flying
Whenever you cast your second spell each turn, put a +1/+1 counter on Thunder Drake.