Switch target creature's power and toughness until end of turn.

Target player sacrifices an enchantment of their choice. Bolster 1. (Choose a creature with the least toughness among creatures you control and put a +1/+1 counter on it.)

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Untap target creature. It gets +2/+2 until end of turn and can block an additional creature this turn.

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

Target creature gets +2/+2 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Cleave {1}{U} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Return target nonland permanent [you control] to its owner's hand.

Prevent all combat damage that would be dealt this turn. Cycling {2} ({2}, Discard this card: Draw a card.)

Target creature gets +4/+3 until end of turn.

Counter target artifact spell.

Target permanent gains hexproof and indestructible until end of turn. If it's an artifact creature, it gets +2/+2 until end of turn.

Flying Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) When this creature enters, you may put target instant or sorcery card from your graveyard on top of your library.

Destroy target noncreature artifact.

Choose one — • Destroy target artifact. • Destroy target creature with defender.

Destroy target enchantment.

Choose one — • Destroy target creature with toughness 4 or greater. • Destroy target enchantment.

Target creature you control gets +0/+3 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)

Destroy target attacking or blocking creature.

First strike When this creature enters or is turned face up, another target creature you control gets +3/+0 until end of turn. Morph {2}{U}{R}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{T}: Add one mana of any color that a land an opponent controls could produce.

Cleave {5}{W} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.) Destroy target [attacking] creature.

Fiery Impulse deals 2 damage to target creature. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, Fiery Impulse deals 3 damage instead.

This artifact enters tapped. {T}: Add {R}.

As long as there are two or more instant and/or sorcery cards in your graveyard, this creature gets +1/+0 and has haste. (It can attack and {T} as soon as it comes under your control.)

Destroy target creature with power 4 or greater. Scry 2. (Look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

({T}: Add {W} or {U}.) This land enters tapped.

Counter target spell that targets a creature.

({T}: Add {U}.)

{T}: Add {U}, {R}, or {W}. {U}{R}{W}, {T}, Sacrifice this artifact: Draw a card.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card.

{W}: This creature gets +0/+1 until end of turn. {U}: This creature gains flying until end of turn.

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

Creatures you control get +2/+1 until end of turn. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures also gain vigilance until end of turn. (Attacking doesn't cause them to tap.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Enchant creature When this Aura enters, if there are five or more cards in your graveyard, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap step.

This artifact enters tapped. {T}: Add {W}.

({T}: Add {U} or {R}.) This land enters tapped.

({T}: Add {R}.)

Counter target spell that targets a player.

({T}: Add {W}.)

Destroy target attacking or blocking creature with power 3 or less.

{W}, {T}: Prevent the next 1 damage that would be dealt to any target this turn. {U}, {T}: Target creature gains flying until end of turn.

({T}: Add {R} or {W}.) This land enters tapped.

{T}: Draw a card, then discard a card. Activate only if you've cast a noncreature spell this turn.

Tap up to two target creatures. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, those creatures don't untap during their controllers' next untap steps.

This artifact enters tapped. {T}: Add {U}.

This creature has double strike as long as there are three or more instant and/or sorcery cards in your graveyard.

Whenever you cast a noncreature spell, put a +1/+1 counter on this creature.

Flash Enchant creature Enchanted creature gets -X/-0, where X is the number of cards in your graveyard.

Destroy target tapped creature.

Destroy target creature with power 4 or greater. You gain 3 life.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)