mtg.wtf

{1}{B}: Perilous Shadow gets +2/+2 until end of turn.

{5}, {T}, Exile Perilous Vault: Exile all nonland permanents.

Return target nonland permanent you don't control to its owner's hand. If its mana value was 2 or less, scry 2.

Defender
Whenever a creature you control with defender blocks, you may gain 2 life.

Flying, lifelink
Whenever another Detective you control enters and whenever a Detective you control is turned face up, Perimeter Enforcer gets +1/+1 until end of turn.

Whenever an artifact you control enters, Perimeter Patrol gets +1/+0 until end of turn.

Whenever Perimeter Sergeant attacks, other Humans you control get +1/+0 until end of turn.

Destroy all green creatures. They can't be regenerated.

Target opponent reveals their hand. You choose a card from it. That player shuffles that card into their library.

If an opponent had a green creature enter the battlefield under their control this turn, you may pay {U} rather than pay this spell's mana cost.
Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.

Whenever Permeating Mass deals combat damage to a creature, that creature becomes a copy of Permeating Mass.

Counter target noncreature spell. Your opponents can't cast noncreature spells this turn.

{X}, Sacrifice Pernicious Deed: Destroy each artifact, creature, and enchantment with mana value X or less.

{T}: Mill two cards.
{2}, Exile Perpetual Timepiece: Shuffle any number of target cards from your graveyard into your library.

Counter target spell unless its controller discards their hand.
Transmute {1}{U}{B}

Whenever an opponent casts a spell, you may exchange control of Perplexing Chimera and that spell. If you do, you may choose new targets for the spell.

Choose one —
• Return all creature tokens to their owners' hands.
• Return all nontoken creatures to their owners' hands.

When Perrie enters, put a shield counter on target creature.
Whenever Perrie attacks, target creature you control gains trample and gets +X/+X until end of turn, where X is the number of different kinds of counters among permanents you control.

Choose a color. Target player reveals their hand and discards all cards of that color.

Choose an artist other than Rebecca Guay. Target player reveals their hand and discards all nonland cards with art by the chosen artist.

Return target nonlegendary creature card from your graveyard to the battlefield with a -1/-1 counter on it.

At the beginning of each opponent's upkeep, they lose 1 life and you put a -1/-1 counter on up to one target creature they control.
Persist

Persistent Marshstalker gets +1/+0 for each other Rat you control.
Threshold — Whenever you attack with one or more Rats, if seven or more cards are in your graveyard, you may pay {2}{B}. If you do, return Persistent Marshstalker from your graveyard to the battlefield tapped and attacking.

Skulk
When Persistent Nightmare deals combat damage to a player, return it to its owner's hand.

{1}, {T}: Target player mills a card.
Tap four untapped Advisors you control: Target player mills twelve cards.
A deck can have any number of cards named Persistent Petitioners.