This land enters tapped.
{2}{R}{G}, {T}: Surveil 1.

Deathtouch
{1}{W}, {T}: Create a Berry token.
{2}{B}, Sacrifice a Berry: Put a +1/+1 counter on Foraging Grub.

Equipped creature gets +2/+2 and can't be blocked by more than one creature.
Equip {4}

Look at the top six cards of your library. You may put a creature card with mana value 3 or less from among them onto the battlefield. It enters with an additional +1/+1 counter on it. Put the rest on the bottom of your library in a random order.
Cycling {R/G}

When Forgemaster Dreadnought enters, create three Treasure tokens.
Spellcharge 9

Whenever Forgotten Cultivator attacks, mill three cards. Return a permanent card from among the milled cards to your hand.
Spellcharge 4

When this land enters, sacrifice it. If you do, search your library for a basic Swamp or Forest card, put it onto the battlefield tapped, then shuffle.
{2}{B}{B}{G}{G}, Discard this card: Return up to one target creature card and up to one target enchantment card from your graveyard to your hand.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {B} or {G}.
Cycling {2}

Fortress Arena enters tapped.
{T}: Add {R} or {W}.
{2}{R}{W}, {T}, Sacrifice Fortress Arena: Draw a card.

Choose one —
• Frag deals 4 damage to target creature.
• Destroy target artifact.

When Free Market enters, target creature gets +2/+2 until end of turn.
You control a creature with power 4 or greater.
You control a creature with toughness 4 or greater.

Whenever you attack, create a 1/1 colorless Soldier creature token that's tapped and attacking.

Create three Berry tokens, then sacrifice any number of Berries. For each Berry sacrificed this way, creatures you control get +1/+1 until end of turn.

Frigid Highlands enters tapped unless you control an Island.
{T}: Add {R} or {G}.

Revered
Whenever this creature attacks, add {R}. Until end of turn, you don't lose this mana as steps and phases end.

If one or more +1/+1 counters would be put on a permanent you control, that many plus one +1/+1 counters are put on that permanent instead.

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

Target creature you control gains double strike until end of turn. It deals damage equal to its power to each of up to two other targets.

Whenever this Subroutine runs, you may play target permanent card from your graveyard this turn. It enters with a finality counter on it.

Enchant creature
Enchanted creature attacks each combat if able.
Whenever enchanted creature attacks, teach it trample.

As an additional cost to cast instant and sorcery spells, you may pay {X}, where X is that spell's mana value. If you do, copy that spell, and you may choose new targets for the copy.
Spellcharge 4

{G}, {T}, Sacrifice an artifact or enchantment: Cache the top card of your library face down. Activate only as a sorcery.

{T}: Add {C}.
{T}: Add one mana of any color. Spend this mana only to cast Shrine spells or activate abilities of Shrines.

{T}: Add {C}.
{2}, {T}: Add two mana of different colors.
{4}, {T}: Look at the top X cards of your library, where X is the number of different color pairs among permanents you control that are exactly two colors. Put one of those cards into your hand and the rest on the bottom of your library in a random order.