Draw three cards, then discard a card.

Whenever a creature you control deals combat damage to a player, you may draw a card. {1}{U}, {T}: Creatures your opponents control attack this turn if able.

Draw two cards.

Changeling (This card is every creature type.) {T}: Target creature gains all creature types until end of turn. {T}: Target creature loses all creature types until end of turn.

Whenever a Sliver creature you control becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}.

Prevent all combat damage that would be dealt to attacking creatures you control.

Prevent all combat damage that would be dealt this turn.

Ward {1} Other Frogs you control have ward {1}. When this creature enters, target creature you control can't be blocked this turn. Whenever that creature deals combat damage this turn, you may exile it. If you do, return it to the battlefield under its owner's control.

Prevent all combat damage that would be dealt this turn. Flashback {2}{G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Choose one — • Target creature gets +3/+3 until end of turn. • Permanents you control gain hexproof until end of turn. • Return target creature to its owner's hand.

All Sliver creatures have reach.

Whenever a Sliver deals combat damage to a player, its controller may create a 1/1 colorless Sliver creature token.

Other Merfolk get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Sliver creatures you control get +3/+3.

Sliver creatures you control have flying.

Flying

All Sliver creatures have shadow. (They can block or be blocked by only creatures with shadow.)

All Sliver creatures have "Whenever this creature is dealt damage, put a +1/+1 counter on it." (It must survive the damage to get the counter.)

All Sliver creatures get +2/+2.

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

All Slivers have "{T}: Add one mana of any color."

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

{T}: Add {G}.

Look at the top four cards of your library. You may put a land card from among them onto the battlefield tapped. If you don't, put a card from among them into your hand. Put the rest on the bottom of your library in a random order.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

{1}, {T}: Add {G}{U}.

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

At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.

Return target creature to its owner's hand. Its controller draws a card.

Whenever a nonartifact permanent you control enters, you may return another permanent you control that shares a permanent type with it to its owner's hand.

Return target permanent you control to its owner's hand.

{T}: Add {C}. Basic landcycling {1} ({1}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)

When this land enters, sacrifice it. When you do, search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

This land enters tapped. {T}: Add {C} for each Locus on the battlefield.

{T}: Add one mana of any color in your commander's color identity.

{T}, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

When this land enters, you gain 1 life for each Locus on the battlefield. {T}: Add {C}.

({T}: Add {U}.)

This land enters tapped unless a player has 13 or less life. {T}: Add {G} or {U}.

This land enters tapped. When this land enters, it deals 1 damage to target opponent. {T}: Add {G} or {U}.

{T}: Add {C}. {G}{U}, {T}: Put a +1/+1 counter on each creature that entered this turn.

({T}: Add {G} or {U}.) This land enters tapped.

{T}: Add {U}.

This land enters tapped. When this land enters, return a land you control to its owner's hand. {T}: Add {G}{U}.

This land enters tapped. {T}: Add {G} or {U}.

({T}: Add {G}.)

({T}: Add {U}.)

({T}: Add {G} or {U}.) This land enters tapped.

This land enters tapped. When this land enters, you gain 1 life. {T}: Add {G} or {U}.

{T}: Add {G}.

{T}: Add {C}. {3}, {T}: Target player mills a card for each Locus you control.

{T}: Add {C}. {7}, {T}: Create a 2/2 colorless Assembly-Worker artifact creature token.

{T}: Add {C}. If you control an Urza's Power-Plant and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Tower, add {C}{C} instead.

{T}: Add {C}. If you control an Urza's Mine and an Urza's Power-Plant, add {C}{C}{C} instead.

Put target card from your graveyard on top of your library.

Return target card from your graveyard to your hand.

All Sliver creatures have trample.

All Slivers have "{1}: This permanent becomes the creature type of your choice in addition to its other types until end of turn."

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

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.

Slivers can't be blocked except by Slivers.

Whenever a Sliver deals combat damage to a player, its controller may draw a card.

Counter target spell.

All Slivers have "When this permanent enters, you may fateseal 1." (To fateseal 1, its controller looks at the top card of an opponent's library, then they may put that card on the bottom of that library.)

Destroy target artifact or enchantment.

Return target creature you control and target creature you don't control to their owners' hands.

All Sliver creatures have "{T}: This creature deals 2 damage to any target and 3 damage to itself."

Choose two target creatures controlled by different players. Return those creatures to their owners' hands.

All Slivers have "{T}: Tap target permanent."

Spree (Choose one or more additional costs.) + {1}{U} — Counter target spell. + {3} — Create a token that's a copy of target artifact or creature you control. + {2} — Draw two cards, then discard a card.