Equipped creature has ": Add one mana of any color."
Equip

Vivid Crag enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Crag: Add one mana of any color.

Vivid Creek enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Creek: Add one mana of any color.

Vivid Grove enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Grove: Add one mana of any color.

Vivid Marsh enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Marsh: Add one mana of any color.

Dakmor Salvage enters tapped.
: Add .
Dredge 2 (If you would draw a card, you may mill two cards instead. If you do, return this card from your graveyard to your hand.)

Vivid Meadow enters tapped with two charge counters on it.
: Add .
, Remove a charge counter from Vivid Meadow: Add one mana of any color.

, , Sacrifice Executioner's Capsule: Destroy target nonblack creature.

Counter target spell with mana value 2.

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

: Target player exiles a card from their graveyard.
, Exile Relic of Progenitus: Exile all graveyards. Draw a card.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Sudden Shock deals 2 damage to any target.

Domain — Tribal Flames deals X damage to any target, where X is the number of basic land types among lands you control.

Add .
Splice onto Arcane (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

When Tidehollow Sculler enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card.
When Tidehollow Sculler leaves the battlefield, return the exiled card to its owner's hand.

As an additional cost to cast this spell, sacrifice an artifact.
Shrapnel Blast deals 5 damage to any target.

Flying
When Narcomoeba is put into your graveyard from your library, you may put it onto the battlefield.

Lightning Helix deals 3 damage to any target and you gain 3 life.

When Riftsweeper enters, choose target face-up exiled card. Its owner shuffles it into their library.

When Myr Retriever dies, return another target artifact card from your graveyard to your hand.

Epochrasite enters with three +1/+1 counters on it if you didn't cast it from your hand.
When Epochrasite dies, exile it with three time counters on it and it gains suspend. (At the beginning of its owner's upkeep, they remove a time counter. When the last is removed, they may cast this card without paying its mana cost. It has haste.)

Add two mana in any combination of colors.
Draw a card.

Other Goblin creatures you control get +1/+1.
: Regenerate another target Goblin.

When Eternal Witness enters, you may return target card from your graveyard to your hand.

Auntie's Snitch can't block.
Prowl (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Goblin or Rogue.)
Whenever a Goblin or Rogue you control deals combat damage to a player, if Auntie's Snitch is in your graveyard, you may return Auntie's Snitch to your hand.

Target opponent reveals cards from the top of their library until four land cards are revealed. That player puts all cards revealed this way into their graveyard.

Draw three cards. Then discard two cards unless you discard an artifact card.

Flying
Whenever this creature deals combat damage to a player, you may destroy target artifact or enchantment that player controls.

, Return Grinning Ignus to its owner's hand: Add . Activate only as a sorcery.

When Kitchen Finks enters, you gain 2 life.
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Destroy target artifact or enchantment. You gain life equal to its mana value.

Flash
Defender, flying

Flying
At the beginning of your upkeep, return an artifact you control to its owner's hand.

Flying
When Flickerwisp enters, exile another target permanent. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Electrolyze deals 2 damage divided as you choose among one or two targets.
Draw a card.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)
Destroy target artifact or enchantment.