When Trial of Ambition enters the battlefield, target opponent sacrifices a creature.
When a Cartouche enters the battlefield under your control, return Trial of Ambition to its owner's hand.

When Trial of Knowledge enters the battlefield, draw three cards, then discard a card.
When a Cartouche enters the battlefield under your control, return Trial of Knowledge to its owner's hand.

When Trial of Solidarity enters the battlefield, creatures you control get +2/+1 and gain vigilance until end of turn.
When a Cartouche enters the battlefield under your control, return Trial of Solidarity to its owner's hand.

When Trial of Strength enters the battlefield, create a 4/2 green Beast creature token.
When a Cartouche enters the battlefield under your control, return Trial of Strength to its owner's hand.

When Trial of Zeal enters the battlefield, it deals 3 damage to any target.
When a Cartouche enters the battlefield under your control, return Trial of Zeal to its owner's hand.

Trueheart Duelist can block an additional creature each combat.
Embalm (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Human Warrior with no mana cost. Embalm only as a sorcery.)

You may exert Trueheart Twins as it attacks. (It won't untap during your next untap step.)
Whenever you exert a creature, creatures you control get +1/+0 until end of turn.

Target player discards two cards.
Cycling (, Discard this card: Draw a card.)

Vigilance
Embalm (, Exile this card from your graveyard: Create a token that's a copy of it, except it's a white Zombie Human Warrior with no mana cost. Embalm only as a sorcery.)

Aftermath (Cast this spell only from your graveyard. Then exile it.)
Target creature gains double strike until end of turn.

Destroy target artifact or land.
Cycling (, Discard this card: Draw a card.)

Flash
When Vizier of Deferment enters the battlefield, you may exile target creature if it attacked or blocked this turn. Return that card to the battlefield under its owner's control at the beginning of the next end step.

You may have Vizier of Many Faces enter the battlefield as a copy of any creature on the battlefield, except if Vizier of Many Faces was embalmed, the token has no mana cost, it's white, and it's a Zombie in addition to its other types.
Embalm

If one or more -1/-1 counters would be put on a creature you control, that many -1/-1 counters minus one are put on it instead.

: Untap another target permanent.
Cycling (, Discard this card: Draw a card.)
When you cycle Vizier of Tumbling Sands, untap target permanent.

You may look at the top card of your library any time.
You may cast creature spells from the top of your library.
You may spend mana as though it were mana of any type to cast creature spells.

Return up to two target creature cards from your graveyard to your hand.
Cycling (, Discard this card: Draw a card.)

When Warfire Javelineer enters the battlefield, it deals X damage to target creature an opponent controls, where X is the number of instant and sorcery cards in your graveyard.

Deathtouch
Cycling (, Discard this card: Draw a card.)

Exile Watchers of the Dead: Each opponent chooses two cards in their graveyard and exiles the rest.