2 cards where the name includes “opal” and the name includes “palace”

Oboro, Palace in the Clouds (Saviors of Kamigawa #164)

Oboro, Palace in the Clouds

Legendary Land

{T}: Add {U}.

{1}: Return Oboro, Palace in the Clouds to its owner’s hand.

Here the soratami wove their endless plots—graceful, artful, and deceitful, while the unwitting world moved below.

Illustrated by Rob Alexander

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny
Opal Palace (Commander Masters #422)

Opal Palace

Land

{T}: Add {C}.

{1}, {T}: Add one mana of any color in your commander’s color identity. If you spend this mana to cast your commander, it enters the battlefield with a number of additional +1/+1 counters on it equal to the number of times it’s been cast from the command zone this game.

Illustrated by John Avon

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny

In the blink of an eye, they strode from deep snow to the end of this search.