Spell Snare

Mystic Gate

{T}: Add {C}.
{W/U}, {T}: Add {W}{W}, {W}{U}, or {U}{U}.

Mystic Confluence

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.

Oust

Put target creature into its owner's library second from the top. Its controller gains 3 life.

Wash Away

Cleave {1}{U}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Counter target spell [that wasn't cast from its owner's hand].

Remand

Counter target spell. If that spell is countered this way, put it into its owner's hand instead of into that player's graveyard.
Draw a card.

Dream Halls

Rather than pay the mana cost for a spell, its controller may discard a card that shares a color with that spell.

Deserted Beach

Deserted Beach enters tapped unless you control two or more other lands.
{T}: Add {W} or {U}.

Evasive Action

Domain — Counter target spell unless its controller pays {1} for each basic land type among lands you control.

Tale's End

Counter target activated ability, triggered ability, or legendary spell.

Reflecting Pool

{T}: Add one mana of any type that a land you control could produce.

Force Spike

Counter target spell unless its controller pays {1}.