Flying
Triskelavus enters the battlefield with three +1/+1 counters on it.
, Remove a +1/+1 counter from Triskelavus: Create a 1/1 colorless Triskelavite artifact creature token with flying. It has "Sacrifice this creature: This creature deals 1 damage to any target."

Triskelion enters the battlefield with three +1/+1 counters on it.
Remove a +1/+1 counter from Triskelion: It deals 1 damage to any target.

Heroic — Whenever you cast a spell that targets Triton Cavalry, you may return target enchantment to its owner's hand.

Heroic — Whenever you cast a spell that targets Triton Fortune Hunter, draw a card.

Triton Shorestalker can't be blocked.

Up to two target creatures each get +0/+3 until end of turn. Untap those creatures. At this turn's next end of combat, tap each creature that was blocked by one of those creatures this turn and it doesn't untap during its controller's next untap step.

Constellation — Whenever an enchantment enters the battlefield under your control, Triton Waverider gains flying until end of turn.

(As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.)
I, II — Put a +1/+1 counter on target creature you control with the greatest power.
III — Target creature you control with the greatest power gains flying, first strike, and lifelink until end of turn.

Return all artifact, enchantment, and planeswalker cards from your graveyard to the battlefield.

Destroy target creature with power 4 or greater. You gain 3 life.

Tromokratis has hexproof unless it's attacking or blocking.
Tromokratis can't be blocked unless all creatures defending player controls block it. (If any creature that player controls doesn't block this creature, it can't be blocked.)

When Trophy Mage enters the battlefield, you may search your library for an artifact card with converted mana cost 3, reveal it, put it into your hand, then shuffle your library.

Exile target creature, then populate. (Create a token that's a copy of a creature token you control.)

Sacrifice a land: Prevent the next 2 damage that would be dealt to any target this turn.

Flying
At the beginning of your end step, tap all lands you control.

When Trove Tracker dies, draw a card.
Encore (, Exile this card from your graveyard: For each opponent, create a token copy that attacks that opponent this turn if able. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.)

Vigilance
Landfall — Whenever a land enters the battlefield under your control, exile target permanent card with converted mana cost 3 or less from your graveyard.
When Trove Warden dies, put each permanent card exiled with it onto the battlefield under the control of that card's owner.

Each player may draw up to two cards. For each card less than two a player draws this way, that player gains 2 life.