: Untap target blue creature.
: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That creature attacks this turn if able. Destroy it at the beginning of the next end step if it didn't attack this turn. Activate only before attackers are declared.

Haste
Whenever Ambergris, Agent of Tyranny attacks, you may discard your hand and draw two cards. When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the number of cards you've discarded this turn.

Flying
Whenever Xyru Specter deals damage to an opponent, that player discards a card unless they challenge you. If challenged, and you show them two black cards in your hand, they must discard two cards.

Haste
Whenever Ambergris, Agent of Balance attacks, you may discard your hand and draw two cards. When you do, put X +1/+1 counters on another target creature you control, where X is the number of cards you've discarded this turn.

Creatures you control have haste.
Formidable — Whenever you attack, if creatures you control have total power 8 or greater, target attacking creature you control fights up to one target creature you don't control.

Double team (When this creature attacks, conjure a duplicate into your hand, then both of them perpetually lose double team.)
When Lizardfolk Librarians enters the battlefield, scry 2.

At the beginning of combat on your turn, choose target creature card in your graveyard. Conjure a duplicate of it into your graveyard.
Descend 8 — Exile a permanent card from your graveyard: You may play it. Activate only as a sorcery and only if there are eight or more permanent cards in your graveyard.

Interplanar (This creature enters onto the interplanar battlefield. Players can't control creatures on the interplanar battlefield.)
Vigilance, haste
Whenever a player attacks with a creature with power 4 or greater, Interplanar Brushwagg also attacks the player or planeswalker that creature is attacking.

When this creature specializes, remove all study counters from it. Look at that many cards from the top of your library. Put one of those cards into your hand and the rest on the bottom of your library in a random order.
: Draw a card, then discard a card.

During your turn, creatures you control get +2/+0.
During turns other than yours, creatures you control get -0/-2.

When Celestine Cave Witch enters, create two 1/1 black Insect creature tokens.
Whenever Celestine Cave Witch attacks, you may sacrifice an Insect. When you do, curse defending player. (Create a black Aura Curse enchantment token that's attached to that player. It has enchant player and "At the beginning of your upkeep, you lose 1 life.")

When this creature enters, you may destroy target artifact.

: Phelddagrif gains trample until end of turn. Target opponent creates a 1/1 green Hippo creature token.
: Phelddagrif gains flying until end of turn. Target opponent gains 2 life.
: Return Phelddagrif to its owner's hand. Target opponent may draw a card.

Menace
Whenever Sophina, Spearsage Deserter attacks, investigate once for each nontoken attacking creature. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this artifact: Draw a card.")
Partner—Friends forever (You can have two commanders if both have this ability.)

Defender
: This creature gets +3/-1 until end of turn and can attack this turn as though it didn't have defender. Activate only once each turn.

target creature gets -x/-x until end of turn, where x is the number of times a capital letter appears in its rules text. (ignore reminder text and flavor text.)

This creature can't be blocked by more than one creature.
Whenever this creature deals combat damage to a player, put a +1/+1 counter on it.

Choose one —
• Destroy target creature with power 4 or greater.
• Destroy target creature with any part of its head higher than the bar. (Align the tops of both cards to check.)

When this Equipment enters, create a 2/2 red Mutant creature token, then attach this Equipment to it.
Equipped creature gets +2/+1.
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Destroy all Plains. For each land destroyed this way, Stench of Evil deals 1 damage to that land's controller unless they pay .

As Fluros of Myra's Marvels enters, choose a number greater than 0.
Whenever you cast a spell with power, toughness, or loyalty equal to the chosen number, target artifact or creature becomes an artifact creature with base power and toughness X/X until end of turn, where X is the chosen number.
Partner

As Ignacio of Myra's Marvels enters, choose armor, blood, book, bottle, fang, fire, scroll, spear, sword, or water.
Whenever you cast a spell with the chosen object in its art, create two Treasure tokens.
Partner (You can have two commanders if both have partner.)

Create a 2/2 white Monk creature token.
Coststorm (When you cast this spell, copy it for each different mana value among other spells and lands you've played this turn.)

As this artifact enters, you and an opponent each secretly choose Whack or Doodle. Then those choices are revealed. If the choices match, this artifact has that ability. Otherwise, it has Buzz.
• Whack — : Target player loses 2 life.
• Doodle — : You gain 3 life.
• Buzz — , : Draw a card.

: Create a 1/1 green Wolf creature token named Wolves of the Hunt. It has "bands with other creatures named Wolves of the Hunt." (Any creatures named Wolves of the Hunt can attack in a band as long as at least one has "bands with other creatures named Wolves of the Hunt." Bands are blocked as a group. If at least two creatures named Wolves of the Hunt you control, one of which has "bands with other creatures named Wolves of the Hunt," are blocking or being blocked by the same creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)

Whenever a Mountain an opponent controls becomes tapped, you gain 1 life.

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

When Pelia enters, return target creature an opponent controls to its owner's hand.

Spiritual Leader — At the beginning of combat on your turn, put a +1/+1 counter on target creature.
Psychic Stimulus — : Add . When you next cast a spell with in its mana cost or activate an ability with in its activation cost this turn, copy that spell or ability. You may choose new targets for the copy. (A copy of a permanent spell becomes a token.)

When Lurking Spinecrawler enters, you may choose a nonland card in your hand. If you do, that card perpetually incorporates and gains "When you cast this spell, each opponent sacrifices a creature. Each opponent who can't discards a card."
Whenever you cast a multicolored spell, for each of that spell's colors, each opponent loses 1 life and you gain 1 life.

Familiar spells you cast have flash. (Bats, Birds, Cats, Dragons, Faeries, Foxes, Frogs, Imps, Lizards, and Spiders are familiars, as well as any creature with "Familiar" in its name.)
: Add X and each opponent loses X life, where X is the number of familiars you control.

Counter target spell. Seek a card with the same mana value as that spell.

Vigilance
Whenever you attack, you create a Food token for each player being attacked. (It's an artifact with ", , Sacrifice this token: You gain 3 life.")
, , Tap X untapped Foods you control: Create X 1/1 white Human creature tokens.

Attacking creatures get -1/-0.

Whenever you cast a spell, put a 0/1 colorless Egg artifact creature token onto the battlefield.
Whenever an Egg you control is put into a graveyard from the battlefield, destroy target artifact or creature.

When this creature enters, destroy target land.