When Ponyback Brigade enters the battlefield or is turned face up, create three 1/1 red Goblin creature tokens.

Morph (You may cast this card face down as a 2/2 creature for . Turn it face up any time for its morph cost.)

, : Return target creature you control and each Aura attached to it to their owners' hands. Activate this ability only during your turn.

Whenever a player casts a spell from their hand, that player exiles it, then exiles cards from the top of their library until they exile a card that shares a card type with it. That player may cast that card without paying its mana cost. Then they put all cards exiled with Possibility Storm on the bottom of their library in a random order.

As long as it's your turn, Pouncing Lynx has first strike.

At the beginning of each opponent's end step, if that player didn't cast a creature spell this turn, create a 2/2 green Lizard creature token.

Enchant creature

Whenever an opponent casts a creature spell, put a +1/+1 counter on enchanted creature.

When Predatory Nightstalker enters the battlefield, you may have target opponent sacrifice a creature.

Sliver creatures you control get +1/+1.

Vigilance (Attacking doesn't cause this creature to tap.)

Predatory Wurm gets +2/+2 as long as you control a Garruk planeswalker.

Target creature gets +2/+2 until end of turn.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Remove up to five counters from target artifact, creature, planeswalker, or opponent.

Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)

, Sacrifice an artifact: Add an amount of equal to the sacrificed artifact's converted mana cost.

As Primal Clay enters the battlefield, it becomes your choice of a 3/3 artifact creature, a 2/2 artifact creature with flying, or a 1/6 Wall artifact creature with defender in addition to its other types. (A creature with defender can't attack.)

Enchant creature

Enchanted creature has trample.

Primordial Hydra enters the battlefield with X +1/+1 counters on it.

At the beginning of your upkeep, double the number of +1/+1 counters on Primordial Hydra.

Primordial Hydra has trample as long as it has ten or more +1/+1 counters on it.

Converge — Prism Array enters the battlefield with a crystal counter on it for each color of mana spent to cast it.

Remove a crystal counter from Prism Array: Tap target creature.

: Scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

: Prodigal Pyromancer deals 1 damage to any target.

Return target permanent card from your graveyard to the battlefield.

Rebound (If you cast this spell from your hand, exile it as it resolves. At the beginning of your next upkeep, you may cast this card from exile without paying its mana cost.)

Reveal the top card of target opponent's library. If it's a land, you gain 1 life. Then that player shuffles their library.

Draw a card at the beginning of the next turn's upkeep.

When you cast this spell, create X 0/1 red Kobold creature tokens named Kobolds of Kher Keep, where X is the amount of mana spent to cast Prossh.

Flying

Sacrifice another creature: Prossh, Skyraider of Kher gets +1/+0 until end of turn.

Imprint — When Prototype Portal enters the battlefield, you may exile an artifact card from your hand.

, : Create a token that's a copy of the exiled card. X is the converted mana cost of that card.

Draw four cards, then discard two cards.

: Psionic Entity deals 2 damage to any target and 3 damage to itself.

As Psychic Allergy enters the battlefield, choose a color.

At the beginning of each opponent's upkeep, Psychic Allergy deals X damage to that player, where X is the number of nontoken permanents of the chosen color they control.

At the beginning of your upkeep, destroy Psychic Allergy unless you sacrifice two Islands.

Whenever a player chooses one or more targets, each player reveals the top card of their library. The player who reveals the card with the highest converted mana cost may change the target or targets. If two or more cards are tied for highest cost, the target or targets remain unchanged. Changing targets this way doesn't trigger abilities of permanents named Psychic Battle.

Target player mills X cards and you gain X life.

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it. You may cast that card for as long as it remains exiled, and you may spend mana as though it were mana of any color to cast that spell.

Target player discards a card. If a land card is discarded this way, return Psychic Miasma to its owner's hand.

Enchant permanent

When Psychic Overload enters the battlefield, tap enchanted permanent.

Enchanted permanent doesn't untap during its controller's untap step.

Enchanted permanent has "Discard two artifact cards: Untap this permanent."

You may tap or untap target permanent.

Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Counter target instant or sorcery spell that targets you.

Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, you may copy the spell countered this way. You may choose new targets for the copy.

Shuffle all cards from your graveyard into your library. Target player mills that many cards.

Whenever an opponent shuffles their library, you may look at the top two cards of that library. You may exile one of those cards. Then put the rest on top of that library in any order.

Target player reveals their hand. You choose an instant or sorcery card from it and exile that card. You may cast that card for as long as it remains exiled. At the beginning of the next end step, if you haven't cast the card, return it to its owner's hand.

If the difference between your life total and target player's life total is 5 or less, exchange life totals with that player.

Cumulative upkeep—Draw a card. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

At the beginning of your end step, sacrifice a land and discard your hand.

Psychosis Crawler's power and toughness are each equal to the number of cards in your hand.

Whenever you draw a card, each opponent loses 1 life.

Target multicolored creature gains double strike until end of turn.

Draw a card.

At the beginning of your upkeep, put a spore counter on Psychotrope Thallid.

Remove three spore counters from Psychotrope Thallid: Create a 1/1 green Saproling creature token.

, Sacrifice a Saproling: Draw a card.

Punish the Enemy deals 3 damage to target player or planeswalker and 3 damage to target creature.

At the beginning of your upkeep, Purging Scythe deals 2 damage to the creature with the least toughness. If two or more creatures are tied for least toughness, you choose one of them.

Exile target card from a graveyard.

Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Bestow (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)

Menace (This creature can't be blocked except by two or more creatures.)

Enchanted creature gets +3/+3 and has menace.

Attacking creatures get +2/+0 until end of turn.

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

Destroy target artifact or creature. It can't be regenerated.

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)

Whenever Pygmy Hippo attacks and isn't blocked, you may have defending player activate a mana ability of each land they control and lose all unspent mana. If you do, Pygmy Hippo assigns no combat damage this turn and at the beginning of your next main phase this turn, you add an amount of equal to the amount of mana that player lost this way.

Pygmy Pyrosaur can't block.

: Pygmy Pyrosaur gets +1/+0 until end of turn.