Eggs Decklist and Sideboarding

Deck
Land 17 4 Ghost Quarter 2 Darksteel Citadel 2 Scalding Tarn 1 Hallowed Fountain 7 Island 1 Plains Combo 33 4 Second Sunrise 4 Faith’s Reward 4 Lotus Bloom 4 Reshape 4 Conjurer’s Bauble 4 Chromatic Star 4 Chromatic Sphere 4 Elsewhere Flask 1 Pyrite Spellbomb	Draw A 4 4 Serum Visions Draw B 4 2 Krark-Clan Ironworks 1 Ichor Wellspring 1 Mox Opal Counter Protection 2 1 Gitaxian Probe 1 Defense Grid	Sideboard 4 Leyline of Sanctity 3 Echoing Truth 2 Silence 1 Pithing Needle 1 Wipe Away 1 AEther Spellbomb 1 Spellskite 1 Leave No Trace 1 Laboratory Maniac

Explanation of Sideboard Choices
Leyline of Sanctity: For BR decks, a lot of their hate is stopped by this card (Slaughter Games, Rakdos Charm).
Echoing Truth: For permanent-based hate.
Silence: For spell-based hate.
Pithing Needle: Tutorable with Reshape, stops grave hate artifacts.
Wipe Away: For UW decks. They can land Rest in Peace or Stony Silence and protect it with counterspells. If you don’t get the enchantment off the field, you can’t combo off. Wipe Away guarantees that it leaves.
AEther Spellbomb: For hatebear decks. Echoing Truth cannot beat two hatebears with different names, but this can. Bounce the most troublesome hatebear first, then Sunrise and repeat.
Spellskite: For Infect. That deck is a tough matchup since it goldfishes faster. Spellskite evens the odds.
Leave No Trace: For white decks. Rest in Peace and Stony Silence are troublesome if they are on the battlefield at the same time – Echoing Truth can only get rid of one of them. Leave No Trace kills both of them.
Keep in mind that casting Second Sunrise on the same turn as Leave No Trace will bring the destroyed enchantments back.
Laboratory Maniac: Alternative wincon. Side it in against decks with extraction effects. I find that it’s the best counterpart to Pyrite Spellbomb; Spellbomb’s weaknesses are that it targets and requires Conjurer’s Bauble to win. Laboratory Maniac doesn’t.

General Sideboarding Guidelines
Most of the time, you'll take out Draw B and the counter protection for your anti-hate cards. Against decks with counterspells, take out Draw A instead.
Keep in Mox Opal against aggressive decks and Gitaxian Probe against combo.
Change wincons (or include both) against decks that may have Slaughter Games.

In-Depth Sideboarding Guide
Jund
+4 Leyline of Sanctity
+2 Echoing Truth
+1 Laboratory Maniac
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Mox Opal
-1 Gitaxian Probe
-1 Defense Grid
-1 Pyrite Spellbomb
Leyline is a house against Jund, stopping Slaughter Games, Jund/Rakdos Charm, and discard spells. Jund can play Rule of Law or Stony Silence out of the sideboard since it splashes white, so board in some Echoing Truth.

Affinity
+3 Echoing Truth
+1 Pithing Needle
-1 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Mox Opal
-1 Defense Grid
Affinity plays 4 copies of Mox Opal, which is Legendary, so side that out. Keep in 1 Krark-Clan Ironworks and Gitaxian Probe to scout for counterspells.

Infect
+1 Wipe Away
+1 Spellskite
+1 AEther Spellbomb
+2 Echoing Truth
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Defense Grid
-1 Serum Visions
Wipe Away is good because Infect can’t cast Vines of Vastwood in response to it. AEther Spellbomb is also invaluable at bouncing Inkmoth Nexus.

Naya Pod
+1 AEther Spellbomb
+3 Echoing Truth
+1 Pithing Needle
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Mox Opal
-1 Defense Grid
Pithing Needle stops Pod and Kiki-Jiki. AEther Spellbomb deals with hatebears.

Scapeshift
+4 Leyline of Sanctity
+2 Silence
-4 Serum Visions
-1 Mox Opal
-1 Gitaxian Probe
Leyline protects you from Valakut and Silence stops counterspells.

UW
+1 Wipe Away
+1 Leave No Trace
+2 Silence
+1 Echoing Truth
-4 Serum Visions
-1 Mox Opal
You need Wipe Away and Leave No Trace to deal with Rest in Peace and Stony Silence.
The maindeck Defense Grid is good against UW’s flash creatures.

Twin
+2 Echoing Truth
+1 Silence
+1 Pithing Needle
+1 Spellskite
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Mox Opal
-1 Serum Visions
Pithing Needle and Spellskite stop the combo.
Although Twin plays counterspells, it is better to keep in Serum Visions and side out the KCI engine as 1) it also plays discard, 2) the main counterspell they play is Dispel, which KCI cannot pay for (unlike Spell Pierce or Mana Leak) and 3) you don’t want to tap out against them.

UR Storm
+2 Echoing Truth
+2 Silence
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Defense Grid
Echoing Truth always has good targets in Pyromancer Ascension and Goblin Electromancer. It also beats Empty the Warrens and a transformational Twin sideboard.
Silence is powerful because all of Storm’s must-resolve spells are sorcery-speed: Grapeshot, Past in Flames, Epic Experiment. If you cast it at the right time, they can’t respond to it.

RG Tron
+1 Pithing Needle
+2 Echoing Truth
-1 Krark-Clan Ironworks
-1 Defense Grid
-1 Serum Visions
Tron is very weak to combo. You just have to be able to beat Relic of Progenitus.
Some lists play Slaughter Games so change wincons if you suspect that.

RDW
+4 Leyline of Sanctity
+1 Echoing Truth
+1 Laboratory Maniac
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Gitaxian Probe
-1 Defense Grid
-1 Pyrite Spellbomb
Same as Jund. Leyline shuts down all of R(akdos)DW’s burn, discard and Rakdos Charm.
Boros is not RDW due to its ability to play Thalia. Against that you should board in AEther Spellbomb.

UWR Delver
+1 Wipe Away
+1 Leave No Trace
+2 Silence
+1 Echoing Truth
-4 Serum Visions
-1 Mox Opal
Same as UW.
RUG Delver is unable to play white hate enchantments, so remove Leave No Trace against them.

Tokens
+1 Leave No Trace
+3 Echoing Truth
+1 AEther Spellbomb
-2 Krark Clan Ironworks
-1 Ichor Wellspring
-1 Defense Grid
-1 Gitaxian Probe
Leave No Trace is very good because it takes out anthems (Honor of the Pure, Intangible Virtue) as well. Echoing Truth doesn’t just bounce, it KILLS tokens, so it’s an obvious include.
Bouncing a Tidehollow Sculler gets back the card that it exiled.

GW Auras
+1 Leave no Trace
+1 AEther Spellbomb
+3 Echoing Truth
-2 Krark-Clan Ironworks
-1 Ichor Wellspring
-1 Defense Grid
-1 Gitaxian Probe
This matchup is like Infect, but better, because they goldfish slower and can't play counterspells.
Leave No Trace is the ultimate trump.

Eggs
+2 Silence
+1 Pithing Needle
-1 Krark-Clan Ironworks
-1 Defense Grid
-1 Serum Visions
Ah, the mirror match. Make minimal changes, it’s just a race to see who combos off first.