Chimeric Mass enters the battlefield with X charge counters on it. {1}: Until end of turn, Chimeric Mass becomes a Construct artifact creature with "This creature's power and toughness are each equal to the number of charge counters on it."

Endless One enters the battlefield with X +1/+1 counters on it.

Heroes' Bane enters the battlefield with four +1/+1 counters on it. {2}{G}{G}: Put X +1/+1 counters on Heroes' Bane, where X is its power.

Hungering Hydra enters the battlefield with X +1/+1 counters on it. Hungering Hydra can't be blocked by more than one creature. Whenever Hungering Hydra is dealt damage, put that many +1/+1 counters on it. (It must survive the damage to get the counters.)

{4}, {T}: Put a charge counter on Magistrate's Scepter. {T}, Remove three charge counters from Magistrate's Scepter: Take an extra turn after this one.

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.

Protean Hydra enters the battlefield with X +1/+1 counters on it. If damage would be dealt to Protean Hydra, prevent that damage and remove that many +1/+1 counters from it. Whenever a +1/+1 counter is removed from Protean Hydra, put two +1/+1 counters on it at the beginning of the next end step.

When Corridor Monitor enters the battlefield, untap target artifact or creature you control.

Hangarback Walker enters the battlefield with X +1/+1 counters on it. When Hangarback Walker dies, create a 1/1 colorless Thopter artifact creature token with flying for each +1/+1 counter on Hangarback Walker. {1}, {T}: Put a +1/+1 counter on Hangarback Walker.

When you cast this spell, each player reveals the top card of their library. Naya Soulbeast enters the battlefield with X +1/+1 counters on it, where X is the total mana value of all cards revealed this way. Trample

Target creature becomes blue until end of turn. Untap that creature. Draw a card.

Draw X cards. If X is 10 or more, instead shuffle your graveyard into your library, draw X cards, untap up to five lands, and you have no maximum hand size for the rest of the game. Exile Finale of Revelation.

When you cast this spell, you gain half X life and draw half X cards. Round down each time. Flying, trample Hydroid Krasis enters the battlefield with X +1/+1 counters on it.

Whenever a creature with power 4 or greater enters the battlefield under your control, draw a card. −1: Untap target permanent.

Trample Lifeblood Hydra enters the battlefield with X +1/+1 counters on it. When Lifeblood Hydra dies, you gain life and draw cards equal to its power.

{T}: Untap two target lands.

At the beginning of your upkeep, put a time counter on As Foretold. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold.

Astral Cornucopia enters the battlefield with X charge counters on it. {T}: Choose a color. Add one mana of that color for each charge counter on Astral Cornucopia.

{T}: Untap target land.

Enrage — Whenever Cacophodon is dealt damage, untap target permanent.

{T}: Untap another target permanent.

+1: Untap up to one target creature and up to one target land. −2: Reveal the top four cards of your library. You may put a creature card and/or a land card from among them into your hand. Put the rest into your graveyard. −8: You get an emblem with "Whenever a creature enters the battlefield under your control, you may have it fight target creature." Then create three 8/8 blue Octopus creature tokens.

{T}: Untap target land. Threshold — {T}: Untap up to three target lands. Activate only if seven or more cards are in your graveyard.

{T}: Untap target land.

Partner with Lore Weaver (When this creature enters the battlefield, target player may put Lore Weaver into their hand from their library, then shuffle.) {T}: Untap two target lands.

{X}, {T}: Untap X target lands.

+2: Untap up to two target creatures and up to two target lands. −3: Target creature gets +5/+5 until end of turn. −10: Look at the top ten cards of your library. You may put any number of creature and/or land cards from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

+2: Scry 2. 0: Look at the top card of your library. If it's a land card or a creature card with mana value less than or equal to the number of loyalty counters on Nissa, Steward of Elements, you may put that card onto the battlefield. −6: Untap up to two target lands you control. They become 5/5 Elemental creatures with flying and haste until end of turn. They're still lands.

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on Petalmane Baku. {1}, Remove X ki counters from Petalmane Baku: Add X mana of any one color.

You may tap or untap target permanent. Splice onto Arcane {U} (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.)

Sunburst (This enters the battlefield with a charge counter on it for each color of mana spent to cast it.) {T}, Remove X charge counters from Infused Arrows: Target creature gets -X/-X until end of turn.

{T}: Put a charge counter on Lux Cannon. {T}, Remove three charge counters from Lux Cannon: Destroy target permanent.

Ravenous Slime can't be blocked by creatures with power 2 or less. If a creature an opponent controls would die, instead exile it and put a number of +1/+1 counters equal to that creature's power on Ravenous Slime.

Whenever you draw a card, put a +1/+1 counter on Chasm Skulker. When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)

Hooded Hydra enters the battlefield with X +1/+1 counters on it. When Hooded Hydra dies, create a 1/1 green Snake creature token for each +1/+1 counter on it. Morph {3}{G}{G} As Hooded Hydra is turned face up, put five +1/+1 counters on it.

{T}: Untap target artifact or creature. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

At the beginning of each upkeep, untap all creatures and lands.

Flash (You may cast this spell any time you could cast an instant.) When Bounding Krasis enters the battlefield, you may tap or untap target creature.

Put a +1/+1 counter on target creature and untap it.

Whenever another Human enters the battlefield under your control, untap Captain of the Mists. {1}{U}, {T}: You may tap or untap target permanent.

Whenever Copperhorn Scout attacks, untap each other creature you control.

Target creature you control gains protection from creatures your opponents control until end of turn. Untap it.

Untap all nonland permanents you control.

Choose one — • Tap target permanent. • Untap target permanent. Entwine {1} (Choose both if you pay the entwine cost.)

{3}{G}, {T}: You may tap or untap target artifact, creature, or land.

Choose one — • Untap target permanent. • Destroy target non-Aura enchantment. • Target creature loses flying until end of turn.

{T}: You may tap or untap another target permanent. Unearth {U} ({U}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Enchant creature {U}: Tap enchanted creature. {U}: Untap enchanted creature.

{2}{G}, {T}: Untap target creature.

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.) As long as Galvanic Alchemist is paired with another creature, each of those creatures has "{2}{U}: Untap this creature."

+1: Draw a card. +1: Untap all creatures you control. −9: Gain control of up to three target creatures.

{3}, {T}: Untap target creature.

{1}, {T}: Untap target creature that has an activated ability with {T} in its cost.

Discard a card: You may tap or untap target artifact, creature, or land.

Untap all creatures you control.

Other green creatures you control get +1/+1. Other blue creatures you control get +1/+1. Untap all green and/or blue creatures you control during each other player's untap step.

Flying {U}, {T}: You may tap or untap target creature.

{2}, {T}: You may tap or untap target creature.

{U}, {T}: You may tap or untap target creature.

Whenever a creature you control becomes tapped, you may put a quest counter on Quest for Renewal. As long as there are four or more quest counters on Quest for Renewal, untap all creatures you control during each other player's untap step.

Return a Forest you control to its owner's hand: Untap target creature. Activate only once each turn.

Untap target creature. Draw a card.

Enchant creature {T}: Tap enchanted creature. {T}: Untap enchanted creature.

Eternity Vessel enters the battlefield with X charge counters on it, where X is your life total. Landfall — Whenever a land enters the battlefield under your control, you may have your life total become the number of charge counters on Eternity Vessel.

Enchant creature {2}{U}: Untap enchanted creature. Totem armor (If enchanted creature would be destroyed, instead remove all damage from it and destroy this Aura.)

Enchant creature Enchanted creature can attack as though it had haste. {0}: Untap enchanted creature. Activate only during your turn and only once each turn.

At the beginning of your end step, untap all Merfolk you control.

{T}: Add {U}. {U}, {T}: Untap target legendary permanent.

Untap target creature. It gets +2/+2 and gains reach until end of turn. (It can block creatures with flying.)

Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When Coral Trickster is turned face up, you may tap or untap target permanent.

Enchant player Whenever enchanted player is attacked, untap all nonland permanents you control. Each opponent attacking that player untaps all nonland permanents they control.

When Great Whale enters the battlefield, untap up to seven lands.

Hollow Trees enters the battlefield tapped. You may choose not to untap Hollow Trees during your untap step. At the beginning of your upkeep, if Hollow Trees is tapped, put a storage counter on it. {T}, Remove any number of storage counters from Hollow Trees: Add {G} for each storage counter removed this way.

{1}, {T}: Untap target land. {1}, {T}, Exert Hope Tender: Untap two target lands. (An exerted creature won't untap during your next untap step.)

Untap target artifact, creature, or land. Draw a card at the beginning of the next turn's upkeep.

{T}: Untap target land.

Whenever a player casts a green spell, you may pay {3}. If you do, untap target permanent.

Flying When Palinchron enters the battlefield, untap up to seven lands. {2}{U}{U}: Return Palinchron to its owner's hand.

Flying When Peregrine Drake enters the battlefield, untap up to five lands.