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}, Sacrifice a creature: Blasting Station deals 1 damage to any target. Whenever a creature enters the battlefield, you may untap Blasting Station.

Tap two untapped artifacts you control: Untap target artifact.

Multikicker {2} (You may pay an additional {2} any number of times as you cast this spell.) Everflowing Chalice enters the battlefield with a charge counter on it for each time it was kicked. {T}: Add {C} for each charge counter on Everflowing Chalice.

Whenever a nontoken creature enters the battlefield, if Genesis Chamber is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.

{T}, Sacrifice an artifact: Target player mills three cards. Whenever an artifact enters the battlefield, you may untap Grinding Station.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy. Equip {3}

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand. {2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

{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.

Whenever a permanent becomes untapped, that permanent's controller mills a card.

Indestructible (Effects that say "destroy" don't destroy this artifact.) Myr creatures get +1/+1. {5}: Create a 1/1 colorless Myr artifact creature token.

{T}: Add {C}{C}. Spend this mana only to cast Myr spells or activate abilities of Myr. {3}, {T}: Return target Myr card from your graveyard to your hand.

{T}: Create a 1/1 colorless Myr artifact creature token. {T}, Tap five untapped Myr you control: Search your library for a Myr creature card, put it onto the battlefield, then shuffle.

Equipped creature gets +1/+1 and is every creature type. Equip {2}

{T}: Add {C}{C}.

You may activate abilities of creatures you control as though those creatures had haste. {1}, {T}: Untap target creature.

{T}: Add one mana of any color.

{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.)

You may have Clever Impersonator enter the battlefield as a copy of any nonland permanent on the battlefield.

You may have Clone enter the battlefield as a copy of any creature on the battlefield.

{T}: Add {G}.

{T}: Put a charge counter on target artifact. Sacrifice Coretapper: Put two charge counters on target artifact.

When Elite Arcanist enters the battlefield, you may exile an instant card from your hand. {X}, {T}: Copy the exiled card. You may cast the copy without paying its mana cost. X is the mana value of the exiled card.

When Eternal Witness enters the battlefield, you may return target card from your graveyard to your hand.

{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.)

When Felidar Guardian enters the battlefield, you may exile another target permanent you control, then return that card to the battlefield under its owner's control.

{T}: Add {W}.

{T}: Untap another target permanent.

Shadow (This creature can block or be blocked by only creatures with shadow.) Whenever Looter il-Kor deals damage to an opponent, draw a card, then discard a card.

You may have Mirror Image enter the battlefield as a copy of a creature you control.

Other Myr creatures you control get +1/+1. {1}, {T}: Untap each other Myr you control.

{T}: Add {C}{C}.

({U/P} can be paid with either {U} or 2 life.) You may have Phyrexian Metamorph enter the battlefield as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

{T}: Add {U}.

Flash You may have Stunt Double enter the battlefield as a copy of any creature on the battlefield.

Creatures you control with power or toughness 1 or less can't be blocked.

When Tribute Mage enters the battlefield, you may search your library for an artifact card with mana value 2, reveal that card, put it into your hand, then shuffle.

When Trophy Mage enters the battlefield, you may search your library for an artifact card with mana value 3, reveal it, put it into your hand, then shuffle.

You may have Vizier of Many Faces enter the battlefield as a copy of any creature on the battlefield, except if Vizier of Many Faces was embalmed, the token has no mana cost, it's white, and it's a Zombie in addition to its other types. Embalm {3}{U}{U}

As Arcane Adaptation enters the battlefield, choose a creature type. Creatures you control are the chosen type in addition to their other types. The same is true for creature spells you control and creature cards you own that aren't on the battlefield.

Creatures you control have "{T}: Add one mana of any color."

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

Whenever a nontoken creature you control dies, put a slime counter on Gutter Grime, then create a green Ooze creature token with "This creature's power and toughness are each equal to the number of slime counters on Gutter Grime."

Creatures don't untap during their controllers' untap steps. Whenever a creature enters the battlefield, untap all creatures.

If Leyline of Abundance is in your opening hand, you may begin the game with it on the battlefield. Whenever you tap a creature for mana, add an additional {G}. {6}{G}{G}: Put a +1/+1 counter on each creature you control.

Exile target creature you control, then return that card to the battlefield under your control.

Changeling (This card is every creature type.) Exile target creature. Its controller creates a 1/1 colorless Shapeshifter creature token with changeling.

Untap all nonland permanents you control.

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Exile target creature you control, then return it to the battlefield under its owner's control. 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.)

{T}: Add {W}.

Azorius Chancery enters the battlefield tapped. When Azorius Chancery enters the battlefield, return a land you control to its owner's hand. {T}: Add {W}{U}.

{T}: Add {U}.

Selesnya Sanctuary enters the battlefield tapped. When Selesnya Sanctuary enters the battlefield, return a land you control to its owner's hand. {T}: Add {G}{W}.

Simic Growth Chamber enters the battlefield tapped. When Simic Growth Chamber enters the battlefield, return a land you control to its owner's hand. {T}: Add {G}{U}.

Search your library for an artifact card, reveal it, put it into your hand, then shuffle.

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Search your library for an Aura or Equipment card, reveal it, put it into your hand, then shuffle.

Create a token that's a copy of target creature you control. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

As an additional cost to cast this spell, sacrifice an artifact. Search your library for an artifact card with mana value X or less, put it onto the battlefield, then shuffle.