Search your library for a basic land card, reveal it, put it into your hand, then shuffle. If this spell's flashback cost was paid, instead search your library for any number of land cards, put them onto the battlefield tapped, then shuffle.
Flashback {3}{W}{U}{B}{R}{G}

Buried Colossus enters the battlefield tapped.
{T}: Add {G} or {W}.
{8}{G/W}: Buried Colossus becomes a 8/8 green and white Cyclops creature until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to green and white. Activate only once each turn.

When Burning Wisdom enters the battlefield, exile the top card of your library. You may play it until end of turn.
Whenever a source you control deals noncombat damage to an opponent, exile Burning Wisdom. You may play it during your next turn.

Callaphe can't be blocked by creatures with mana value 4 or greater.
Whenever Callaphe the Mariner deals combat damage to a player, you get an experience counter. Then if you have three or more experience counters, bless target player.

Flying
Whenever Capital Skyraiders deals combat damage to a player, integrate the top card of that player's library.
Capital Skyraiders gets +3/+3 as long as four or more cards are integrated onto it.

When Capital Zenith enters, sacrifice it unless you pay {2}.
{T}: Add one mana of any type.

{T}: Target player exiles a card from their graveyard.
{2}, {T}: Exile target card from a graveyard. Then if there are three or more cards exiled with Censor Tablet, exile it. If you do, draw two cards.

Enchant creature
Enchanted creature can't attack or block.
Whenever enchanted creature's controller amps it up, sacrifice Censor's Sanction and create a 1/1 colorless Servo artifact creature token.

Flying
When Charming Siren leaves the battlefield, if it wasn't blocking, you may bless target creature.

Creatures you control have ward {2}.
[+1]: Scry 2. You may put a loyalty counter on another planeswalker you control.
[–1]: Create a 0/0 white Army creature token, then put a +1/+1 counter on each Army you control.
[–6]: Exile target nonland permanent.

Whenever Claes, Shield of Karda attacks, another target attacking creature you control gains indestructible until end of turn.
Whenever a planeswalker enters the battlefield under your control, you may exile Claes, then return him to the battlefield transformed with a number of loyalty counters on him equal to the starting loyalty of that planeswalker.

Target creature gets +X/+0 until end of turn.
Draw a card.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {G} instead.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {B} instead.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {U} instead.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {W} instead.

{T}: Add {C}.
If you would add {C}, you may pay 1 life. If you do, add {R} instead.

When Confetti Cannons leaves the battlefield, create a 1/1 white Elemental Bird creature token with flying.

Create a 1/1 white Spirit creature token with flying. If you've cast another instant or sorcery spell this turn, create two of those tokens instead.

Indulgence
When Conspiracy of Wealth enters the battlefield, draw a card.
Whenever you indulge, you may exile target card from a graveyard.

Corgan Sprawl enters the battlefield tapped.
{T}: Add {B} or {R}.
{T}, Discard another card named Corgan Sprawl: Draw a card.

Choose one —
• Return target creature card from a graveyard to its owner's hand.
• Exile target creature card in a graveyard, then draw a card.

{T}: Add {C}.
{X}{1}: Court of Miracles dares X.

{T}: Add {C}.
{1}, {T}, Sacrifice Cradle of Rebirth: Copy target spell you control which had its flashback cost paid. You may choose new targets for the copy.

Vigilance
Whenever this creature transforms into Crown Betrayer or another permanent you control transforms, Crown Betrayer gets +2/+0 and gains indestructible until end of turn.