As long as you control another multicolored permanent, Bant Sureblade gets +1/+1 and has first strike.

Whenever you cast a multicolored instant or sorcery spell, you may pay {1}. If you do, copy that spell. You may choose new targets for the copy.

{2}, {T}: You may put a multicolored creature card from your hand onto the battlefield.

As long as you control another multicolored permanent, Esper Stormblade gets +1/+1 and has flying.

Fallaji Wayfarer is all colors. This ability doesn't affect its color identity. (It can be in any deck whose commander's color identity includes green.)

Multicolored spells you cast have convoke. (Your creatures can help cast those spells. Each creature you tap while casting a multicolored spell pays for {1} or one mana of a color that creature is.)

Hexproof from monocolored

Whenever you cast a multicolored spell, create a 4/4 red and white Golem artifact creature token.

Multicolored creatures you control get +1/+1.

You may reveal a multicolored card you own from outside the game and put it into your hand. Exile Glittering Wish.

Whenever you cast a multicolored spell, Gloryscale Viashino gets +3/+3 until end of turn.

As long as you control another multicolored permanent, Grixis Grimblade gets +1/+1 and has deathtouch. (Any amount of damage it deals to a creature is enough to destroy that creature.)

Draw a card. You may put a land card from your hand onto the battlefield.

{T}: Add {C}.

{1}, {T}: Add one mana of any color. If that mana is spent on a multicolored creature spell, that creature enters the battlefield with an additional +1/+1 counter on it.

Whenever you cast a multicolored spell, create a 1/1 white Human creature token.

As long as you control another multicolored permanent, Jund Hackblade gets +1/+1 and has haste.

Each other multicolored creature you control gets +1/+1 for each of its colors.

Exile target nonland permanent an opponent controls and all tokens that player controls with the same name as that permanent.

Defender

{T}: Lobber Crew deals 1 damage to each opponent.

Whenever you cast a multicolored spell, untap Lobber Crew.

Whenever you cast a multicolored spell, Mana Cannons deals X damage to any target, where X is the number of colors that spell is.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

Multicolored creatures you control have deathtouch.

Trample

Multicolored creatures you control have trample.

Flying

Multicolored creatures you control have flying.

Haste

Multicolored creatures you control have haste.

Vigilance

Multicolored creatures you control have vigilance.

As long as you control another multicolored permanent, Naya Hushblade gets +1/+1 and has shroud. (It can't be the target of spells or abilities.)

Flying

When Niv-Mizzet Reborn enters the battlefield, reveal the top ten cards of your library. For each color pair, choose a card that's exactly those colors from among them. Put the chosen cards into your hand and the rest on the bottom of your library in a random order.

Choose one --

• Return target multicolored permanent card with mana value 3 or less from your graveyard to the battlefield tapped.

• Counter target instant or sorcery spell.

• Destroy target creature or planeswalker with mana value 3 or less.

Obsidian Obelisk enters the battlefield tapped.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a multicolored spell.

{T}: Add one mana of any color. Spend this mana only to cast a multicolored spell.

Target multicolored creature gains double strike until end of turn.

Draw a card.

Whenever you cast a multicolored spell, Pyroconvergence deals 2 damage to any target.

Trample

Rampaging Monument enters the battlefield with three +1/+1 counters on it.

Whenever you cast a multicolored spell, put a +1/+1 counter on Rampaging Monument.

Return target multicolored card from your graveyard to your hand.

Flying

Other multicolored creatures you control get +1/+0.

Whenever another multicolored creature you control dies, return it to its owner's hand at the beginning of the next end step.

At the beginning of combat on your turn, if you control two or more multicolored permanents, Scuttling Butler gains double strike until end of turn.

Create X 1/1 green Saproling creature tokens.

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Search your library for a multicolored card, reveal it, put it into your hand, then shuffle.

Whenever you cast a multicolored spell, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.")

{X}{X}{X}, {T}: Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random order.

Whenever you cast a multicolored spell, draw a card.

{T}: Add one mana of any color.

Multicolored spells cost up to {2} less to cast.

Return up to three target multicolored cards from your graveyard to your hand. Exile Vivid Revival.

Hideaway 5 (When this enchantment enters the battlefield, look at the top five cards of your library, exile one face down, then put the rest on the bottom in a random order.)

Whenever you cast a multicolored spell, create a Treasure token. Then you may pay {W}{U}{B}{R}{G}. If you do, you may play the exiled card without paying its mana cost.