Based on the thread I have seen in this forum and many drafts it is almost universal that these are the worst commons, however what could we do to make these playable in a limited format? What would you change about them?

Urban Burgeoning

I think a simple cantrip would suffice here. Draw a card attached to this would make this very playable, especially if simic was in RTR but lets stick to realistic solutions. Keeping a mana open for the rest of the game to mind **** your opponents isn't anything to scoff at, or actually having an answer/combat trick. There are plenty of white/green/black instants that could be used.

Chronic Flooding

I think reducing this to 1-2 cards milled (and one mana) but putting it on your own land to mill your opponent would be better. As it stands right now its just a bad give your opponent the chance to make the "wrong" choice card.

Possible Alternates: 1 Blue, enchant land, Enchanted land gains the ability: Tap: Mill target player for 1 card.

1 colorless, 1 blue Enchant land As an extra cost to play this card, return a land you control to its owner's hand, Enchanted land gains the ability Tap: Mill target player for 2 cards. Reasonable downside that can be worked around imo otherwise it would be too powerful.



Destroy the Evidence

I really don't like this card because its a bad luck mills card and on top of that, it replaces the very thing you wanted to destroy, unless its targeting a rogue's passage, guildgate, or shock land its kind of pointless on the destruction element. A good chance they'll replace the basic you just killed and just mill a few cards.

I was thinking something like this: 

3 colorless one blue and one black

Destroy target land that player searchs his library until he/she reveals a land, put into play tapped, all lands that your opponent controls that share the name of that land, do not untap next turn. Still five mana, a bit harder to cast but would really need dimir to be in guild for it work. Not a realistic solution but sounds awesome for five mana.

Or

4 colorless one black

Destroy target land, that player reveals his hand, you may choose a land card from it, that player discards that card.

or

Destroy target land, that player reveals cards until they reveal a land card, if that card is not the same name as the land destroyed put those cards into the graveyard, if not put it into play tapped, put the rest of the cards revealed this way into the graveyard.


 
Survey the Wreckage

I honestly think this would be good at just one less colorless mana, five is just not good enough, its too slow.

Search Warrant

This is the hard one, both of these effects in a limited environment are lackluster, (revealing an opponents hand and lifegain).

I think this needs an incase a hand is empty clause. 

Would doubling the life gain make it playable? I think the entire mechanic of the card would have to be redone.. 

every card should have a use, in some format period, but that is compeltely avoiding the point of the thread.

Going to skip the ones you already posted alternatives for. I like the thread!

Destroy the Evidence
B3
Destroy target land. If that land is non-basic, search target player's hand, graveyard and library for all other copies of that land and exile them. 
More in line with black in my opinion.


Survey the Wreckage
Let's make a variant of Stone Rain ? Could be a nice sideboarder.
R2 Destroy target land. If that land is non-basic, but a 1/1 red goblin token into play under your control.
Then again, I hate land destruction with a vengeance so I'm OK with this costing RRRRRRR.

Search Warrant
I like to do something interested here just for funzies. You get the comes into play effect and can pull off a trick, but your opponent gets a free card on the table.

UW
Target player reveals his or her hand. You may choose a nonland permanent from it. If you do, you gain life equal to its converted mana cost and put that permanent into play under your control. At the beginning of your next upkeep, your opponent gains control of it. 

Urban Burgeoning
Enchantment - Aura
Enchant land
When ~ enters play, draw a card.
Enchanted land has "Untap this land during each other player's untap step."

Urban Growth
Enchantment - Aura
Enchant land
When ~ enters play, you may not draw cards this turn.
Enchanted land does not untap during your untap step.
Untap enchanted land during each other player's untap step.

Chronic Flooding
Enchantment - Aura
Enchant land an opponent controls.
Whenever enchanted land becomes tapped, its controller puts the top 8 cards of his or her library into his or her graveyard.

Chronic Flooding
Enchantment - Aura
Enchant land an opponent controls.
When ~ enters play, draw a card.
Whenever enchanted land becomes tapped, its controller puts the top 4 cards of his or her library into his or her graveyard.

World Floods
Enchantment
Enchant land an opponent controls.
Whenever a land an opponent controls becomes tapped, its controller puts the top card of his or her library into his or her graveyard.

Destroy the Evidence compare to Acidic Slime
Sorcery
Destroy target land.
Its controller reveals cards from the top of his or her library until he or she has revealed 2 land cards, then exiles the revealed lands and puts the other revealed cards into his or her graveyard.

Survey the Wreckage
Sorcery
Destroy target land.
Put a 4/4 red Dragon creature token with flying onto the battlefield.

Survey the Wreckage
Sorcery
Destroy target land.
Put two 1/1 red Goblin creature token onto the battlefield.

Survey the Wreckage
Sorcery
Destroy target land.
Put a 1/1 red Goblin creature token onto the battlefield.

Search Warrant
Sorcery
Target player reveals his or her hand. You gain life equal to 3 times the number of cards in that player's hand.

Search Police
Sorcery
Target player reveals his or her hand, choose a revealed card.
If that card is white, green or blue, gain 10 life.
If that card is red or black, put a 0/1 blue white Creature token with "You are hexproof." into play, you gain 4 life.