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You may exile a blue card from your hand rather than pay this spell's mana cost.
Return target creature to its owner's hand.
If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost.
Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
You may return an Island you control to its owner's hand rather than pay this spell's mana cost.
Counter target spell unless its controller pays .
Raid — If you attacked this turn, you may pay rather than pay this spell's mana cost.
Counter target spell.
You may sacrifice a nontoken blue creature rather than pay this spell's mana cost.
You may tap or untap target creature.
As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Counter target spell unless its controller pays . If you revealed a Dragon card or controlled a Dragon as you cast this spell, counter that spell instead.
Counter target spell. If the amount of mana spent to cast that spell was less than its mana value, you draw a card.
If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.
Reveal any number of blue cards in your hand. Counter target spell unless its controller pays for each card revealed this way.
Counter target spell with mana value 3 or less. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
Counter target spell if its mana value is less than or equal to the greatest mana value among permanents you control.
Counter target spell with mana value X. (For example, if that spell's mana cost is , X is 5.)
Exile the top X cards of your library. You may cast an instant or sorcery spell with mana value X or less from among them without paying its mana cost. Then put the exiled instant and sorcery cards that weren't cast this way into your hand and the rest on the bottom of your library in a random order.
As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs less to cast for each card exiled this way.
Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)
Kicker (You may pay an additional as you cast this spell.)
Counter target spell if its mana value is 2 or less. If this spell was kicked, counter that spell if its mana value is 4 or less instead.
Whenever an opponent casts a spell named Sol Ring, if Ring Out is in your library, you may search you library for Ring Out, and cast it without paying its mana cost targeting that Sol Ring, then shuffle.
Look at the top five cards of your library. Exile one of them face down and put the rest on the bottom of your library in a random order. You may cast the exiled card without paying its mana cost if it's an instant spell with mana value 2 or less. If you don't, put that card into your hand.