Gain control of target spell. You may choose new targets for it. (If that spell becomes a permanent, it enters the battlefield under your control.)

When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

Counter target artifact or enchantment spell.

Creatures you control have flying.

Creatures your opponents control lose flying and can't have or gain flying.

Choose one --

• Counter target spell.

• Target player draws two cards.

• Gain control of target nonland permanent with mana value 1 or less.

Azorius Guildgate enters the battlefield tapped.

{T}: Add {W} or {U}.

{T}: Gain control of target creature with power less than or equal to the number of creatures you control.

For each opponent, gain control of target permanent that player controls.

Blossoming Sands enters the battlefield tapped.

When Blossoming Sands enters the battlefield, you gain 1 life.

{T}: Add {G} or {W}.

You may choose not to untap Callous Oppressor during your untap step.

As Callous Oppressor enters the battlefield, an opponent chooses a creature type.

{T}: Gain control of target creature that isn't of the chosen type for as long as Callous Oppressor remains tapped.

Enchant land

Enchanted land has "{T}, Discard a card: Gain control of target creature until end of turn."

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

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 one mana of any color in your commander's color identity.

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Counter target spell.

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.

Graft 2 (This creature enters the battlefield with two +1/+1 counters on it. Whenever another creature enters the battlefield, you may move a +1/+1 counter from this creature onto it.)

{U}, {T}: Gain control of target creature with a +1/+1 counter on it for as long as Cytoplast Manipulator remains on the battlefield.

Destroy target artifact. You gain life equal to its mana value.

Gain control of target creature with mana value X or less.

Target player untaps all basic lands they control.

{U}{U}, {T}: Gain control of target legendary permanent. (This effect lasts indefinitely.)

Gain control of target creature with mana value X.

Counter target creature spell.

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

Converge -- Gain control of target creature if its power is less than or equal to the number of colors of mana spent to cast this spell.

Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

({T}: Add {G}.)

Graypelt Refuge enters the battlefield tapped.

When Graypelt Refuge enters the battlefield, you gain 1 life.

{T}: Add {G} or {W}.

You may choose not to untap Helm of Possession during your untap step.

{2}, {T}, Sacrifice a creature: Gain control of target creature for as long as you control Helm of Possession and Helm of Possession remains tapped.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Cast this spell only after combat.

Gain control of target nonartifact, nonblack creature that attacked you this turn and put a -1/-0 counter on it.

Gain control of target artifact, creature, or enchantment. Lands you control don't untap during your next untap step.

Flying

When Keiga, the Tide Star dies, gain control of target creature.

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.

Counter target spell unless its controller pays {3}.

Whenever Martyr's Bond or another nonland permanent you control is put into a graveyard from the battlefield, each opponent sacrifices a permanent that shares a card type with it.

{4}, {T}, Sacrifice Mindslaver: You control target player during that player's next turn. (You see all cards that player could see and make all decisions for the player.)

Enchant creature

Whenever enchanted creature attacks, you may create a token that's a copy of that creature. Exile that token at end of combat.

You may have Mirrormade enter the battlefield as a copy of any artifact or enchantment on the battlefield.

Myriad Landscape enters the battlefield tapped.

{T}: Add {C}.

{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

Choose three. You may choose the same mode more than once.

• Counter target spell unless its controller pays {3}.

• Return target creature to its owner's hand.

• Draw a card.

Counter target noncreature spell.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W}.)

({T}: Add {W} or {U}.)

Prairie Stream enters the battlefield tapped unless you control two or more basic lands.

You may have Progenitor Mimic enter the battlefield as a copy of any creature on the battlefield, except it has "At the beginning of your upkeep, if this creature isn't a token, create a token that's a copy of this creature."

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

Kicker {5} (You may pay an additional {5} as you cast this spell.)

Create a token that's a copy of target creature. If this spell was kicked, create five of those tokens instead.

Flying

Landfall -- Whenever a land enters the battlefield under your control, you may gain control of target creature for as long as you control Roil Elemental.

You may choose not to untap Rubinia Soulsinger during your untap step.

{T}: Gain control of target creature for as long as you control Rubinia and Rubinia remains tapped.

Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When you control no Islands, sacrifice Seasinger.

You may choose not to untap Seasinger during your untap step.

{T}: Gain control of target creature whose controller controls an Island for as long as you control Seasinger and Seasinger remains tapped.

Selesnya Guildgate enters the battlefield tapped.

{T}: Add {G} or {W}.

Flying

Sacrifice Selfless Spirit: Creatures you control gain indestructible until end of turn.

Flying

You, planeswalkers you control, and other creatures you control have hexproof.

{4}{G}{G}: Put a +1/+1 counter on each creature you control.

Enchant creature

Enchanted creature has indestructible.

Whenever a creature enters the battlefield, you may attach Shielded by Faith to that creature.

Simic Guildgate enters the battlefield tapped.

{T}: Add {G} or {U}.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

{T}, Remove one or more +1/+1 counters from Simic Manipulator: Gain control of target creature with power less than or equal to the number of +1/+1 counters removed this way.

Flying

When Sower of Temptation enters the battlefield, gain control of target creature for as long as Sower of Temptation remains on the battlefield.

Destroy target artifact or enchantment, then populate. (Create a token that's a copy of a creature token you control.)

Exile target creature. Its controller gains life equal to its power.

Thornwood Falls enters the battlefield tapped.

When Thornwood Falls enters the battlefield, you gain 1 life.

{T}: Add {G} or {U}.

Tranquil Cove enters the battlefield tapped.

When Tranquil Cove enters the battlefield, you gain 1 life.

{T}: Add {W} or {U}.

Woodland Stream enters the battlefield tapped.

{T}: Add {G} or {U}.