Cumulus Soundvein enters tapped.
When Cumulus Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than white.
{T}: Add {W}.

Desolate Soundvein enters tapped.
When Desolate Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than black.
{T}: Add {B}.

Drizzling Cloister enters tapped.
{T}: Add {G} or {U}.
{T}, Discard another card named Drizzling Cloister: Draw a card.

Glassy Soundvein enters tapped.
When Glassy Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than blue.
{T}: Add {U}.

Hyperloop Obelisk enters tapped.
{T}: Add {U}, {B}, or {R}.
{VP}{VP}{VP}{VP}, Discard Hyperloop Obelisk: Untap target creature. It gets +4/+4 until end of turn.

Magdalena Bay enters tapped.
{T}: Add {G}, {W}, or {U}.
{VP}{VP}{VP}{VP}, Discard Magdalena Bay: Target creature gets +3/+3 and gains menace until end of turn.

Nascent Lightvein enters tapped.
As Nascent Lightvein enters, choose a color. Then if you control three permanents that could each produce a different color of mana, untap it.
{T}: Add one mana of the chosen color.

Ozzen Headquarters enters tapped.
{T}: Add {W} or {B}.
{T}, Discard another card named Ozzen Headquarters: Draw a card.

Possibility Heights enters tapped.
{T}: Add {R} or {G}.
{T}, Discard another card named Possibility Heights: Draw a card.

{T}: Add {C}.
Whenever you amp it up, untap Pulsing Soundsea.

Quantum Skycity enters tapped.
{T}: Add {W} or {U}.
{T}, Discard another card named Quantum Skycity: Draw a card.

Rapturous Festival enters tapped.
{T}: Add {G} or {W}.
{T}, Discard another card named Rapturous Festival: Draw a card.

Rattling Soundvein enters tapped.
When Rattling Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than red.
{T}: Add {R}.

Studio Excelsior enters tapped.
{T}: Add {R}, {G}, or {W}.
{VP}{VP}{VP}{VP}, Discard Studio Excelsior: Target creature gets +2/+2 until end of turn and can't be blocked this turn.

Sunrise Lot enters tapped.
{T}: Add {R} or {W}.
{T}, Discard another card named Sunrise Lot: Draw a card.

Sunset Slums enters tapped.
{T}: Add {W}, {U}, or {B}.
{VP}{VP}{VP}{VP}, Discard Sunset Slums: Target creature gets +3/+3 and gains trample until end of turn.

Swanky Club enters tapped.
{T}: Add {U} or {B}.
{T}, Discard another card named Swanky Club: Draw a card.

Tenuous Edge enters tapped.
{T}: Add {U} or {R}.
{T}, Discard another card named Tenuous Edge: Draw a card.

Tree of Clues enters tapped.
{T}: Add {B}, {R}, or {G}.
{VP}{VP}{VP}{VP}, Discard Tree of Clues: Target creature gets +3/+3 and gains flying until end of turn.

Uncharted Haven enters tapped.
As Uncharted Haven enters, choose a color.
{T}: Add one mana of the chosen color.

Vigorous Soundvein enters tapped.
When Vigorous Soundvein enters, you may pay 1 life. If you do, add one mana of any color other than green.
{T}: Add {G}.

Flying
Whenever Irrlicht deals combat damage to a player, they reveal their hand and you choose a nonland card from it. Exile that card until your next turn.

Whenever Music Master attacks, you may pay {U}. If you do, put a curio counter on another target creature you control.
{1}{U}: Target creature gains flying until end of turn.

Indestructible
As long as your devotion to white and blue is less than seven, Ephara isn't a creature.
Whenever you cast an enchantment spell, draw a card.

Flash
When Agent of Deception enters, counter target creature or planeswalker spell unless its controller pays {X}, where X is your devotion to blue.