When Deputy of Detention enters the battlefield, exile target nonland permanent an opponent controls and all other nonland permanents that player controls with the same name as that permanent until Deputy of Detention leaves the battlefield.

Trample

Whenever Dreadhorde Arcanist attacks, you may cast target instant or sorcery card with mana value less than or equal to Dreadhorde Arcanist's power from your graveyard without paying its mana cost. If that spell would be put into your graveyard, exile it instead.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

You may look at the top card of your library any time.

You may cast noncreature spells from the top of your library. If you cast a spell this way, you may cast it as though it had flash.

Lifelink

At the beginning of your end step, if you gained life this turn, you may pay . If you do, draw a card.

Counter target creature or planeswalker spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Scry 1.

Plague Mare can't be blocked by white creatures.

When Plague Mare enters the battlefield, creatures your opponents control get -1/-1 until end of turn.

, : You gain 4 life. Activate only if you control a Yanggu planeswalker.

Flying

: Target opponent loses 2 life and you gain 2 life.

Flying

Taborax, Hope's Demise has lifelink as long as it has five or more +1/+1 counters on it.

Whenever another nontoken creature you control dies, put a +1/+1 counter on Taborax. If that creature was a Cleric, you may draw a card. If you do, you lose 1 life.

When Yasharn enters the battlefield, search your library for a basic Forest card and a basic Plains card, reveal those cards, put them into your hand, then shuffle.

Players can't pay life or sacrifice nonland permanents to cast spells or activate abilities.