Target creature gets +3/+1 until end of turn. Scry 1.

Bargain
Torch the Tower deals 2 damage to target creature or planeswalker. If this spell was bargained, instead it deals 3 damage to that permanent and you scry 1.
If a permanent dealt damage by Torch the Tower would die this turn, exile it instead.

Torrent of Stone deals 4 damage to target creature.
Splice onto Arcane — Sacrifice two Mountains.

Target instant or sorcery spell becomes a copy of Lightning Bolt. Its controller may choose new targets for it.

Demonstrate
Destroy target artifact or creature you don't control. If that permanent is destroyed this way, its controller exiles cards from the top of their library until they exile a nonland card, then they may cast that card without paying its mana cost.

Whenever this spell is countered or fizzles, you may copy it and choose new targets for the copy.
Trial and Error deals 3 damage to any target.

Trick Shot deals 6 damage to target creature and 2 damage to up to one other target creature token.

Choose a triggered ability of target permanent. It triggers. You control that ability.

This spell costs less to cast if you control a Vehicle.
Truck Toss deals 4 damage to any target.

Attacking creatures get +2/+0 until end of turn.

Destroy target Wall. It can't be regenerated.

Target player can't play lands this turn.
Draw a card.

Devoid
Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn.

Target creature gets +3/+0 until end of turn. When it dies this turn, manifest dread.

Tweeze deals 3 damage to any target. You may discard a card. If you do, draw a card.

Target creature gains double strike until end of turn. (Then exile this card. You may cast the creature later from exile.)

Twin Bolt deals 2 damage divided as you choose among one or two targets.

Choose one —
• When you cast your next instant or sorcery spell this turn, copy that spell. You may choose new targets for the copy.
• Target creature you control gains double strike until end of turn.

Target creature gets +1/+1 and gains double strike until end of turn.

Target creature gets +3/+0 and gains haste until end of turn.

As an additional cost to cast this spell, discard a card.
Draw two cards and create two Treasure tokens.

Destroy target Equipment. If that Equipment was attached to a creature, Unforge deals 2 damage to that creature.

Unfriendly Fire deals 4 damage to any target.

Unholy Heat deals 2 damage to target creature or planeswalker.
Delirium — Unholy Heat deals 6 damage instead if there are four or more card types among cards in your graveyard.

Double the power of target creature until end of turn.

Unleash Shell deals 5 damage to target creature or planeswalker and 2 damage to that permanent's controller.

Target creature gains haste until end of turn.

Kicker
Damage can't be prevented this turn. If this spell was kicked, it deals 5 damage to target player or planeswalker.

Unsubtle Mockery deals 4 damage to target creature. Surveil 1.

Choose one —
• Destroy target artifact.
• Change the target of target spell or ability with a single target.
• One or two target creatures can't block this turn.