Reach
When Roaming Treefolk enters, target creature or Ruin gets +2/+2 until end of turn.
Wander {5}{G}

Target creature gets +2/+0 and gains first strike until end of turn. It gets an additional +1/+0 until end of turn for each time you've amped it up this turn.

When Rotroot Hauler enters, mill three cards, then you may put a permanent card in your graveyard on top of your library.

Destroy target artifact or enchantment. If it was a token, you draw a card and gain 2 life.

Flashback costs you pay cost {2} less.
{R}, {T}, Discard a card: Draw a card.

Reach
{1}, Sacrifice a land: Put a +1/+1 counter on Runerock Automaton.

Prowess
When Satyr Arsonist enters, destroy up to one target nonbasic land. Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle.

Hexproof from permanents

Whenever you cast an instant or sorcery spell, choose one that hasn't been chosen this turn —
• Create a 1/1 colorless Construct artifact creature token.
• Discard a card, then draw a card.
• Add one mana of any type.

{1}{R}, {T}, Discard a card: Draw a card. Scalding Crucible deals 1 damage to each opponent.
Spellcharge 5

Players can't gain life.
Whenever a player casts a spell, Scathing Remarks deals 1 damage to that player for each of that spell's colors.

This spell can't be countered.
Players can't gain life.
{1}{R}: Scorching Condemnation becomes a 4/4 red Elemental creature with trample and haste until end of turn. Activate only during your turn.

{3}, {T}, Sacrifice Scorching Illuminator: Return target instant or sorcery card from your graveyard to your hand. Add one mana of any color.

Trample
When Scourge of Capitalism enters, it fights target creature with the greatest power or tied for the greatest power among creatures you don't control. Excess damage is dealt to that creature's controller instead.

Double target creature's power and toughness until end of turn.
Flashback {1}{G}

Haste
Solidarity

Scry 3, then reveal the top card of your library. If it's a creature card, put it into your hand.

As an additional cost to cast this spell, you may put a card from your hand on the bottom of your library. If you do, it costs {5} less to cast.
Searing Truthflame deals 5 damage to target creature or planeswalker.

Secluded Hangar enters tapped unless you control a basic non-Forest land.
{T}: Add {G}.
{2}, {T}: Put a +1/+1 counter on target creature that entered this turn.

Flying
Whenever Seeker Orbs becomes tapped, scry 1.

Whenever a basic land you control enters, put a +1/+1 counter on Seeker of New Horizons. If you control seven or more lands, bless that land.

When Seer of the Aspirants enters, surveil 1.
Wander {2}{G}

Trample
When Seismic Chimera enters, bless target creature.

Vigilance
Whenever a creature you control with vigilance attacks, put a +1/+1 counter on that creature.

Set Ablaze deals 2 damage to any target. You may discard up to two cards, then draw that many cards.