Estrathian Gentrifiers's power is equal to the number of differently named lands you control.
Whenever Estrathian Gentrifiers enters or attacks, you may sacrifice a basic land. If you do, search your library for a land card, put it onto the battlefield, then shuffle.

Revered
{T}: Add {G}.

You may pay {3}{R/G}{R/G} and sacrifice an artifact or enchantment rather than pay this spell's mana cost.
Trample

Enchant creature with another Aura attached to it
Enchanted creature gets +3/+3 and has trample, vigilance, and reach.

When Everpresent Rot enters, create a 1/1 green Saproling creature token, surveil 1, then you gain 1 life.
When one or more permanent cards leave your graveyard, return Everpresent Rot to its owner's hand.

This spell can't be countered.
Whenever Eviviva enters or attacks, create a 2/2 red Warrior creature token with “Whenever this creature deals combat damage to a player, exile the top card of your library. You may play that card this turn.”

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

Deathtouch
Other Gorgons, Snakes, and Basilisks you control get +1/+1.
Whenever a creature with deathtouch you control deals combat damage to a player or planeswalker, create a Treasure token.

{3}{R}: Exile the top card of your library. You may play that card until the end of your next turn.
{7}{R}: Exotic Transformer deals damage equal to its power to any target.

Trample, haste
Decayed

Explosive Redemption deals 4 damage to target creature. When that creature dies this turn, return it to the battlefield under your control. It gains haste. Sacrifice it at end of turn.

Reveal the top four cards of your library. Put up to two permanent cards from among them into your hand and the rest into your graveyard. You may put land cards onto the battlefield tapped rather than your hand.
Flashback—{3}{G}, Tap an untapped Ruin you control.

Whenever this Subroutine runs, when you next cast an instant, sorcery, or Subroutine spell this turn, copy it. You may choose new targets for the copy.

Enchant creature
When Fable of Tooth and Fur enters, create three 2/2 green Wolf creature tokens.
Enchanted creature gets +1/+1 for each creature you control and gains trample.

Revered
Landfall — Whenever a land you control enters, put a +1/+1 counter on this creature. Then if you control eight or more lands, double the number of +1/+1 counters on this creature.

When this creature enters, create a colorless artifact token named Puzzlebox with “{T}, Discard a card: Draw a card.”
Whenever a creature you control attacks, you may exile a number of cards from your graveyard equal to its power. If you do, put a +1/+1 counter on it.

Put a +1/+1 counter on target creature. It gets +2/+0 and gains trample until end of turn.

Exile the top two cards of your library. You may play those cards until you next cast a spell from your hand.
Flashback {3}{R}{R}

Cards in graveyards can't leave the graveyard.
Cycling {2}

As an additional cost to cast this spell, sacrifice a creature.
Fall Upon Your Blade deals damage equal to the sacrificed creature's power to any target.
Cycling {2}

Enchant creature you control
When Fall from Nyx enters, destroy target artifact or land.
Enchanted creature gets +2/+0.

Fatal Flourish deals 4 damage to target creature. If excess damage is dealt this way, put that many +1/+1 counters on a creature you control.
Cycling {2}

Trample
Forestcycling {2}

Enchant creature
Enchanted creature gets +1/+1 and has vigilance and trample.

Fabric — When this creature enters, add X mana in any combination of colors, where X is the number of enchantments you control.
{1}{R}, Discard a card: Draw a card.