You have no maximum hand size. At the beginning of your upkeep, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") Whenever you draw your second card each turn, put two +1/+1 counters on Morska, Undersea Sleuth.

Whenever you cast a creature spell, draw a card.

When Elvish Visionary enters the battlefield, draw a card.

Draw two cards. You may put a land card from your hand onto the battlefield.

Whenever a nontoken creature enters the battlefield under your control, if it doesn't have the same name as another creature you control or a creature card in your graveyard, draw a card.

At the beginning of your upkeep, scry 1. Whenever you cast a creature spell, you may pay {G}. If you do, draw a card.

Landfall — Whenever a land enters the battlefield under your control, you may pay {2}. If you do, draw a card.

Landfall — Whenever a land enters the battlefield under your control, you gain 1 life and draw a card.

If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

{T}: Add {C}. {G}{U}, {T}: You may cast spells this turn as though they had flash.

Azorius Chancery enters the battlefield tapped. When Azorius Chancery enters the battlefield, return a land you control to its owner's hand. {T}: Add {W}{U}.

{T}: Add {C}. {3}{G}, {T}, Sacrifice Blighted Woodland: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

When Brokers Hideout enters the battlefield, sacrifice it. When you do, search your library for a basic Forest, Plains, or Island card, put it onto the battlefield tapped, then shuffle and you gain 1 life.

({T}: Add {G} or {W}.) Canopy Vista enters the battlefield tapped unless you control two or more basic lands.

{T}: Add one mana of any color in your commander's color identity.

Deserted Beach enters the battlefield tapped unless you control two or more other lands. {T}: Add {W} or {U}.

Dreamroot Cascade enters the battlefield tapped unless you control two or more other lands. {T}: Add {G} or {U}.

{T}, Sacrifice Evolving Wilds: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

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

As Fortified Village enters the battlefield, you may reveal a Forest or Plains card from your hand. If you don't, Fortified Village enters the battlefield tapped. {T}: Add {G} or {W}.

Glacial Fortress enters the battlefield tapped unless you control a Plains or an Island. {T}: Add {W} or {U}.

Hinterland Harbor enters the battlefield tapped unless you control a Forest or an Island. {T}: Add {G} or {U}.

({T}: Add {U}.)

Overgrown Farmland enters the battlefield tapped unless you control two or more other lands. {T}: Add {G} or {W}.

({T}: Add {W}.)

As Port Town enters the battlefield, you may reveal a Plains or Island card from your hand. If you don't, Port Town enters the battlefield tapped. {T}: Add {W} or {U}.

({T}: Add {W} or {U}.) Prairie Stream enters the battlefield tapped unless you control two or more basic lands.

You have no maximum hand size. {T}: Add {C}.

Selesnya Sanctuary enters the battlefield tapped. When Selesnya Sanctuary enters the battlefield, return a land you control to its owner's hand. {T}: Add {G}{W}.

Simic Growth Chamber enters the battlefield tapped. When Simic Growth Chamber enters the battlefield, return a land you control to its owner's hand. {T}: Add {G}{U}.

Sunpetal Grove enters the battlefield tapped unless you control a Forest or a Plains. {T}: Add {G} or {W}.

{T}, Sacrifice Terramorphic Expanse: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

When Treva's Ruins enters the battlefield, sacrifice it unless you return a non-Lair land you control to its owner's hand. {T}: Add {G}, {W}, or {U}.

When Avenger of Zendikar enters the battlefield, create a 0/1 green Plant creature token for each land you control. Landfall — Whenever a land enters the battlefield under your control, you may put a +1/+1 counter on each Plant creature you control.

Landfall — Whenever a land enters the battlefield under your control, creatures you control get +1/+1 until end of turn.

Flying Landfall — Whenever a land enters the battlefield under your control, you may create a 1/1 white Bird creature token with flying.

Trample Landfall — Whenever a land enters the battlefield under your control, put a +1/+1 counter on Oran-Rief Hydra. If that land is a Forest, put two +1/+1 counters on Oran-Rief Hydra instead.

Trample Landfall — Whenever a land enters the battlefield under your control, you may create a 4/4 green Beast creature token.

Landfall — Whenever a land enters the battlefield under your control, choose one — • Put a +1/+1 counter on target creature. • You gain 2 life.

Landfall — Whenever a land enters the battlefield under your control, create a 1/1 green Saproling creature token.

{T}: Add one mana of any color in your commander's color identity.

Genomic Enhancement — {T}: Add one mana of any color. If this mana is spent to cast a creature spell, that creature enters the battlefield with an additional +1/+1 counter on it.

Flying {T}: Add one mana of any color.

Lands you control have "{T}: Add one mana of any color." {T}: Add one mana of any color.

When Coiling Oracle enters the battlefield, reveal the top card of your library. If it's a land card, put it onto the battlefield. Otherwise, put that card into your hand.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

When Farhaven Elf enters the battlefield, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Search your library for a Plains, Island, Swamp, or Mountain card, put it onto the battlefield tapped, then shuffle.

Draw a card. You may put a land card from your hand onto the battlefield.

Creatures you control have vigilance and "{T}: Add one mana of any color. Spend this mana only to cast a creature spell." Whenever you cast a creature spell, if three or more mana from creatures was spent to cast it, draw a card.

Indestructible As long as your devotion to green and white is less than seven, Karametra isn't a creature. Whenever you cast a creature spell, you may search your library for a Forest or Plains card, put it onto the battlefield tapped, then shuffle.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Vigilance {T}: You may put a basic land card from your hand onto the battlefield. {T}: Return target basic land you control to its owner's hand.

Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Sacrifice Sakura-Tribe Elder: Search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Untap all permanents you control during each other player's untap step.

{T}: Add {C}{C}.

You have no maximum hand size. {T}: Add {C}.

Landfall — Whenever a land enters the battlefield under your control, create a Food token or a Treasure token. (Food is an artifact with "{2}, {T}, Sacrifice this artifact: You gain 3 life." Treasure is an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

When Wood Elves enters the battlefield, search your library for a Forest card, put that card onto the battlefield, then shuffle.

Flying Landfall — Whenever a land enters the battlefield under your control, you may return target nonland permanent card from your graveyard to your hand. If that land is a Plains, you may return that nonland permanent card to the battlefield instead.

Vigilance {T}, Sacrifice Bounty Agent: Destroy target legendary permanent that's an artifact, creature, or enchantment.

Destroy target artifact or enchantment. You may put a land card from your hand onto the battlefield.

{1}{G}, Sacrifice Caustic Caterpillar: Destroy target artifact or enchantment.

When Druid of Purification enters the battlefield, starting with you, each player may choose an artifact or enchantment you don't control. Destroy each permanent chosen this way.

Flash When Frilled Mystic enters the battlefield, you may counter target spell.

Destroy target permanent. Its controller creates a 3/3 green Elephant creature token.

Flash When Mystic Snake enters the battlefield, counter target spell.

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Reclamation Sage enters the battlefield, you may destroy target artifact or enchantment.

Exile target creature. Its controller gains life equal to its power.

Return a creature you control to its owner's hand, then destroy all creatures.

Landfall — Whenever a land enters the battlefield under your control, choose one — • Create a 2/2 white Cat Beast creature token. • Put a +1/+1 counter on each creature you control. Those creatures gain vigilance until end of turn.