Counter target spell. Create an X/X green Ooze creature token, where X is that spell's mana value.

Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

Counter target artifact or creature spell. Discover X, where X is that spell's mana value. (Exile cards from the top of your library until you exile a nonland card with that mana value or less. Cast it without paying its mana cost or put it into your hand. Put the rest on the bottom in a random order.)

Counter target spell. At the beginning of your next first main phase, add X mana in any combination of colors, where X is that spell's mana value.

Counter target creature spell. Draw cards equal to that spell's mana value.

Counter target spell. If was spent to cast this spell, that spell's controller mills X cards, where X is the spell's mana value.

When this creature enters, create two Treasure tokens. (They're artifacts with ", Sacrifice this token: Add one mana of any color.")

Counter target creature spell. Create a 2/2 blue Illusion creature token.

Flash

Flying

When this creature enters, counter target spell. Put X +1/+1 counters on this creature, where X is that spell's mana value.

Counter target spell. Seek a card with the same mana value as that spell.

Return target creature to its owner's hand. Create X 1/1 green Saproling creature tokens, where X is that creature's mana value.

Counter target creature spell. Create a 1/1 blue Spirit creature token with flying.

Draw two cards. Create a Treasure token. (It's an artifact with ", Sacrifice this token: Add one mana of any color.")

Counter target spell. Clash with an opponent. If you win, at the beginning of your next main phase, you may add an amount of equal to that spell's mana value. (Each clashing player reveals the top card of their library, then puts that card on their choice of the top or bottom. A player wins if their card had a greater mana value.)

Counter target creature spell.

Draw a card.

This spell costs less to cast if it targets a creature spell.

Counter target spell.

Counter target spell.

Investigate three times. (To investigate, create a Clue token. It's an artifact with ", Sacrifice this token: Draw a card.")

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

Counter target spell.