MTG Mono Green Midrange Deck by 27TrueRunes

{T}: Add {G}.

Offspring {1} When Fountainport Charmer enters, creature cards in your hand perpetually gain "This spell costs {1} less to cast."

At the beginning of your first main phase, a random creature card with the greatest mana value among creature cards in your hand perpetually gains "This spell costs {1} less to cast." {T}: Add one mana of any color.

When this creature enters, add one mana of any color. Whenever another creature you control with power 4 or greater enters, draw a card. Plot {2}{G} (You may pay {2}{G} and exile this card from your hand. Cast it as a sorcery on a later turn without paying its mana cost. Plot only as a sorcery.)

Reach Whenever another nontoken creature you control dies, you may reveal cards from the top of your library until you reveal a creature card. Put that card into your hand and the rest on the bottom of your library in a random order.

Ward {2} At the beginning of your first main phase, add {G}{G}.

Trample Whenever this creature or another creature you control with power 4 or greater enters, you gain 3 life and draw a card. When this creature dies, if it's not a token, create a token that's a copy of it, except it's an artifact in addition to its other types.

Haste When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.

This spell costs {X} less to cast, where X is the greatest power among creatures you control. Trample When Mitotic Ultimus dies, conjure two cards named Mitotic Slime onto the battlefield.

This spell costs {X} less to cast, where X is the total power of creatures you control. Trample (This creature can deal excess combat damage to the player or planeswalker it's attacking.)

This spell costs {X} less to cast, where X is the greatest power among creatures you control. Whenever one or more nontoken creatures you control die, create a green Fungus Dinosaur creature token with base power and toughness each equal to the total power of those creatures. {2}, {T}: Double target creature's power until end of turn.

Search your library for a creature card with mana value X or less, put it onto the battlefield, then shuffle. Harmonize {X}{G}{G}{G}{G} (You may cast this card from your graveyard for its harmonize cost. You may tap a creature you control to reduce that cost by an amount of generic mana equal to its power. Then exile this spell.)

({T}: Add {G}.)

As this land enters, choose a creature type. {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to cast a creature spell of the chosen type, and that spell can't be countered.