Suspend 4--{U} (Rather than cast this card from your hand, pay {U} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost.)
Target player draws three cards.
{G}
Blossoming Defense
Instant
Target creature you control gets +2/+2 and gains hexproof until end of turn.
--
Botanical Sanctum
Land
Botanical Sanctum enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {G} or {U}.
{U}
Brainstorm
Instant
Draw three cards, then put two cards from your hand on top of your library in any order.
--
Breeding Pool
Land - Forest Island
({T}: Add {G} or {U}.)
As Breeding Pool enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.
{1}{U}
Chart a Course
Sorcery
Draw two cards. Then discard a card unless you attacked this turn.
{U}
Cosi's Trickster
Creature - Merfolk Wizard
Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.
1 /
1
{U}{U}
Counterspell
Instant
Counter target spell.
{U}
Curiosity
Enchantment - Aura
Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.
{U}
Curious Obsession
Enchantment - Aura
Enchant creature
Enchanted creature gets +1/+1 and has "Whenever this creature deals combat damage to a player, you may draw a card."
At the beginning of your end step, if you didn't attack with a creature this turn, sacrifice Curious Obsession.
{U}
Cursecatcher
Creature - Merfolk Wizard
Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.
1 /
1
{1}{U}
Daze
Instant
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 {1}.
{U}
Delver of Secrets
Creature - Human Wizard
At the beginning of your upkeep, look at the top card of your library. You may reveal that card. If an instant or sorcery card is revealed this way, transform Delver of Secrets.
1 /
1
--
Insectile Aberration
Creature - Human Insect
Flying
1 /
1
{U}
Dive Down
Instant
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.)
{1}{G}{U}
Edric, Spymaster of Trest
Legendary Creature - Elf Rogue
Whenever a creature deals combat damage to one of your opponents, its controller may draw a card.
2 /
2
--
Flooded Grove
Land
{T}: Add {C}.
{G/U}, {T}: Add {G}{G}, {G}{U}, or {U}{U}.
--
Flooded Strand
Land
{T}, Pay 1 life, Sacrifice Flooded Strand: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.
{3}{U}{U}
Force of Will
Instant
You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.
--
Forest
Basic Land - Forest
({T}: Add {G}.)
{4}{U}
Gush
Instant
You may return two Islands you control to their owner's hand rather than pay this spell's mana cost.
Draw two cards.
{G}
Hapatra's Mark
Instant
Target creature you control gains hexproof until end of turn. Remove all -1/-1 counters from it. (A creature with hexproof can't be the target of spells or abilities your opponents control.)
--
Hinterland Harbor
Land
Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island.
{T}: Add {G} or {U}.
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{W/U}
Judge's Familiar
Creature - Bird
Flying
Sacrifice Judge's Familiar: Counter target instant or sorcery spell unless its controller pays {1}.
1 /
1
{G}
Keen Sense
Enchantment - Aura
Enchant creature
Whenever enchanted creature deals damage to an opponent, you may draw a card.
{U}{U}
Mana Drain
Instant
Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
{U/P}
Mental Misstep
Instant
({U/P} can be paid with either {U} or 2 life.)
Counter target spell with mana value 1.
{U}
Merfolk Spy
Creature - Merfolk Rogue
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
Whenever Merfolk Spy deals combat damage to a player, that player reveals a card at random from their hand.
1 /
1
{U}{U}
Merfolk Trickster
Creature - Merfolk Wizard
Flash
When Merfolk Trickster enters the battlefield, tap target creature an opponent controls. It loses all abilities until end of turn.
2 /
2
{3}{U}{U}
Misdirection
Instant
You may exile a blue card from your hand rather than pay this spell's mana cost.
Change the target of target spell with a single target.
{U}
Mist-Cloaked Herald
Creature - Merfolk Warrior
Mist-Cloaked Herald can't be blocked.
1 /
1
--
Misty Rainforest
Land
{T}, Pay 1 life, Sacrifice Misty Rainforest: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.
{1}{U}
Negate
Instant
Counter target noncreature spell.
{G}
Nimble Mongoose
Creature - Mongoose
Shroud (This creature can't be the target of spells or abilities.)
Threshold -- Nimble Mongoose gets +2/+2 as long as seven or more cards are in your graveyard.
1 /
1
{3}{U}
Ninja of the Deep Hours
Creature - Human Ninja
Ninjutsu {1}{U} ({1}{U}, Return an unblocked attacker you control to hand: Put this card onto the battlefield from your hand tapped and attacking.)
Whenever Ninja of the Deep Hours deals combat damage to a player, you may draw a card.
2 /
2
{U}
Opt
Instant
Scry 1.
Draw a card.
--
Polluted Delta
Land
{T}, Pay 1 life, Sacrifice Polluted Delta: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.
{U}
Pteramander
Creature - Salamander Drake
Flying
{7}{U}: Adapt 4. This ability costs {1} less to activate for each instant and sorcery card in your graveyard. (If this creature has no +1/+1 counters on it, put four +1/+1 counters on it.)
1 /
1
{G}
Ranger's Guile
Instant
Target creature you control gets +1/+1 and gains hexproof until end of turn. (It can't be the target of spells or abilities your opponents control.)
{1}{U}
Remand
Instant
Counter target spell. If that spell is countered this way, put it into its owner's hand instead of into that player's graveyard.
Draw a card.
--
Scalding Tarn
Land
{T}, Pay 1 life, Sacrifice Scalding Tarn: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.
{U}
Siren Stormtamer
Creature - Siren Pirate Wizard
Flying
{U}, Sacrifice Siren Stormtamer: Counter target spell or ability that targets you or a creature you control.
1 /
1
{G}
Sixth Sense
Enchantment - Aura
Enchant creature
Enchanted creature has "Whenever this creature deals combat damage to a player, you may draw a card."
{G/U}
Slippery Bogle
Creature - Beast
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
1 /
1
{U}
Slither Blade
Creature - Naga Rogue
Slither Blade can't be blocked.
1 /
2
{U}
Spell Pierce
Instant
Counter target noncreature spell unless its controller pays {2}.
{1}{U}
Spellstutter Sprite
Creature - Faerie Wizard
Flash
Flying
When Spellstutter Sprite enters the battlefield, counter target spell with mana value X or less, where X is the number of Faeries you control.
1 /
1
{U}
Triton Shorestalker
Creature - Merfolk Rogue
Triton Shorestalker can't be blocked.
1 /
1
--
Tropical Island
Land - Forest Island
({T}: Add {G} or {U}.)
{1}{U}{U}
True-Name Nemesis
Creature - Merfolk Rogue
As True-Name Nemesis enters the battlefield, choose a player.
True-Name Nemesis has protection from the chosen player.
3 /
1
{1}{U}{U}
Vendilion Clique
Legendary Creature - Faerie Wizard
Flash
Flying
When Vendilion Clique enters the battlefield, look at target player's hand. You may choose a nonland card from it. If you do, that player reveals the chosen card, puts it on the bottom of their library, then draws a card.
3 /
1
--
Verdant Catacombs
Land
{T}, Pay 1 life, Sacrifice Verdant Catacombs: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.
--
Windswept Heath
Land
{T}, Pay 1 life, Sacrifice Windswept Heath: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.
--
Wooded Foothills
Land
{T}, Pay 1 life, Sacrifice Wooded Foothills: Search your library for a Mountain or Forest card, put it onto the battlefield, then shuffle.
--
Yavimaya Coast
Land
{T}: Add {C}.
{T}: Add {G} or {U}. Yavimaya Coast deals 1 damage to you.
{2}{U}
Back to Basics
Enchantment
Nonbasic lands don't untap during their controllers' untap steps.
{1}{G}
Heroic Intervention
Instant
Permanents you control gain hexproof and indestructible until end of turn.