Spells you control can't be countered by blue or black spells this turn, and creatures you control can't be the targets of blue or black spells this turn.

Counter target instant spell if it's blue. Draw a card at the beginning of the next turn's upkeep.

Counter target blue instant spell.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Choose one — • Counter target blue spell. • Destroy target blue permanent.

Choose one — • Destroy target blue permanent. • Return target Island to its owner's hand.

Choose one — • Destroy target blue or black noncreature permanent. • Permanents you control can't be the targets of blue or black spells your opponents control this turn.

Cumulative upkeep {R} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) Blue creatures can't block creatures you control. Nonblue creatures can't block creatures you control unless their controller pays 1 life for each blocking creature they control.

White creatures and blue creatures can't block.

Blue creatures don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4} for each creature chosen this way. If the player does, untap those creatures.

At the beginning of your upkeep, sacrifice this enchantment unless you pay {G}. Whenever a player puts an Island or blue permanent onto the battlefield, that player sacrifices an Island or blue permanent of their choice. Whenever a player puts a Swamp or black permanent onto the battlefield, that player sacrifices a Swamp or black permanent of their choice.

If an opponent cast a blue spell this turn, you may pay {R} rather than pay this spell's mana cost. Change the target of target spell with a single target.

Flash When this creature enters, if an opponent cast a blue and/or black spell this turn, look at the top four cards of your library. You may reveal a permanent card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.

Cast this spell only during your turn. Take an extra turn after this one if an opponent cast a blue spell this turn.

Target player reveals their hand. For each blue instant card revealed this way, that player discards that card unless they pay 4 life.

Creatures you control can't be the targets of blue spells or abilities from blue sources.

Choose one — • Exile target player's graveyard. • Destroy target artifact. • Each creature deals 1 damage to its controller.

Islands don't untap during their controllers' untap steps.

Whenever a player casts a spell, that player discards a card.

Flash When this creature enters, copy target instant or sorcery spell. You may choose new targets for the copy.

Whenever an opponent draws a card, Ob Nixilis deals 1 damage to that player. −2: Destroy target creature. Its controller draws two cards.

Target player draws cards equal to half the number of cards in their library and loses half their life. Round up each time.

This creature has first strike during your turn. Whenever an opponent draws a card, this creature deals 1 damage to them.

Target player discards two cards. That player may copy this spell and may choose a new target for that copy.