Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Millstone

Island

Whirlwind Denial

For each spell and ability your opponents control, counter it unless its controller pays {4}.

Jayemdae Tome

Swamp

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Crux of Fate

Choose one —
• Destroy all Dragon creatures.
• Destroy all non-Dragon creatures.

Blue Sun's Zenith

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Compulsive Research

Target player draws three cards. Then that player discards two cards unless they discard a land card.

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.