msem-instigator

Rhapsody {4}{U}{U} (Pay {4}{U}{U} to cast this as a 4/4, or as a sorcery to make it become a 4/4.)
Whenever you cast a noncreature spell, Triumvirate Inductee gets +1/+1 until end of turn. Then if its power is 4 or greater, you may tap or untap target permanent.

Triumvirate Infiltrator has flying as long as you control another Elemental.

Rhapsody {4}{W}{W} (Pay {4}{W}{W} to cast this as a 4/4, or as a sorcery to make it become a 4/4.)
Triumvirate Strategist has first strike as long as it's attacking.

{2}, Sacrifice another creature: Create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)

Deathtouch

{T}, Pay 1 life: Add {G}.
{T}, Pay 1 life, Sacrifice Tropical Grove: Search your library for a Forest card, put it onto the battlefield tapped, then shuffle.

At the beginning of your upkeep, if you control a legendary creature, put a +1/+1 counter on Trossingen Warden.

When Troubled Heir dies, create a tapped Plains token.

When Troubled Homesteader dies, draw a card.

Once each turn, when you search your library, you may add {B}{B}.

Flying
When Trove Keeper dies, create two Treasure tokens.

Flying
When Trove Tyrant enters, exile the top five cards of your library.
Whenever Trove Tyrant deals combat damage to a player, you may cast an artifact card exiled with it without paying its mana cost.

Activated abilities of creatures you control cost up to {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.

When Truffle Snuffer enters, mill three cards. When you do, choose one —
• Return an instant or sorcery card put into your graveyard this way to your hand.
• Put two +1/+1 counters on Truffle Snuffer.

Hexproof from enchantments (This creature can't be the target of enchantment spells or abilities your opponents control.)

Harmony — Search your library for a basic land or Desert card, reveal it, and put it into your hand. Then shuffle.
When Trumpeting Pathmaker enters, harmonize. (Trigger up to one harmony of a permanent you control.)

Identity — At the beginning of your upkeep, if you control at least two other creatures that share a creature type with Trupi Coordinator, you may draw a card.

Whenever Trusted Comrade and at least one other creature attack, create a 1/1 white Soldier creature token that's tapped and attacking.

Vigilance
Assault {G} (Whenever this attacks, if it has no +1/+1 counters on it, you may pay its assault cost to put a +1/+1 counter on it.)

Equipped creature gets +1/+1.
Whenever equipped creature attacks, tap up to one target creature.
Equip {1}

(Transform this if it's not attached to a creature. Pay {2}{W} as a sorcery to unattach it.)
Enchant creature you control
Trusty Steed's rider gets +2/+2.

Whenever a creature dealt damage by Truth Extractor this turn dies, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

Enchant player
At the beginning of enchanted player's upkeep, they choose one —
• That player reveals their hand and discards a card.
• That player discards a card at random.

{T}, Mill two cards: Add one mana of any color.

When Truthseeker's Blade enters, it deals 2 damage to target creature you don't control.
Equipped creature gets +2/+0.
Equip {3}