Gainsay

Hunting Drake

Flying
When this creature enters, put target red or green creature on top of its owner's library.

Planar Overlay

Each player chooses a land they control of each basic land type. Return those lands to their owners' hands.

Planeswalker's Mischief

{3}{U}: Target opponent reveals a card at random from their hand. If it's an instant or sorcery card, exile it. You may cast it without paying its mana cost for as long as it remains exiled. At the beginning of the next end step, if you haven't cast it, return it to its owner's hand. Activate only as a sorcery.

Disciple of Kangee

{U}, {T}: Target creature gains flying and becomes blue until end of turn.

Rushing River

Kicker—Sacrifice a land. (You may sacrifice a land in addition to any other costs as you cast this spell.)
Return target nonland permanent to its owner's hand. If this spell was kicked, return another target nonland permanent to its owner's hand.

Sea Snidd

{T}: Target land becomes the basic land type of your choice until end of turn.

Shifting Sky

As this enchantment enters, choose a color.
All nonland permanents are the chosen color.

Sisay's Ingenuity

Enchant creature
When this Aura enters, draw a card.
Enchanted creature has "{2}{U}: Target creature becomes the color of your choice until end of turn."

Sleeping Potion

Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
When enchanted creature becomes the target of a spell or ability, sacrifice this Aura.

Stormscape Battlemage

Kicker {W} and/or {2}{B} (You may pay an additional {W} and/or {2}{B} as you cast this spell.)
When this creature enters, if it was kicked with its {W} kicker, you gain 3 life.
When this creature enters, if it was kicked with its {2}{B} kicker, destroy target nonblack creature. That creature can't be regenerated.

Stormscape Familiar

Flying
White spells and black spells you cast cost {1} less to cast.

Sunken Hope

At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand.

Waterspout Elemental

Kicker {U} (You may pay an additional {U} as you cast this spell.)
Flying
When this creature enters, if it was kicked, return all other creatures to their owners' hands and you skip your next turn.

Bog Down

Kicker—Sacrifice two lands. (You may sacrifice two lands in addition to any other costs as you cast this spell.)
Target player discards two cards. If this spell was kicked, that player discards three cards instead.

Dominaria's Judgment

Until end of turn, creatures you control gain protection from white if you control a Plains, from blue if you control an Island, from black if you control a Swamp, from red if you control a Mountain, and from green if you control a Forest.

Planeshift