The Rules

[quote from="Lab Description" class="riot"]

Build decks around specific constraints to receive powerful buffs! If your deck meets one of the following criteria, you'll gain a special ability:

• All Even: If all cards in your deck have an even mana cost, grant allies +1|+0 each round!
• All Odd: If all cards in your deck have an odd mana cost, grant allies +0|+1 each round!
• No Followers: If your deck contains no followers, create a follower in hand when you cast your second spell each round!
• All Common: If your deck contains only common cards, create champions in hand from Round 7 onward!

[/quote]

Notes:

• All bonus effects are applied at the start of the round
• If your deck qualifies for multiple buffs, you'll be automatically assigned just one.
• You can opt to play a deck which doesn't qualify for any bonus -- your opponent will still have theirs
• 0 mana cards are considered even
• For "No Followers": 
  • Your deck can contain champions and spells that create followers
  • The follower will be random with mana cost between 0 and your current maximum mana
  • You only receive a follower on the 2nd spell; subsequent spells have no effect until the next round
• For "All Common", you will receive a random Level 2 champion at the start of the round comparable to [runecard]The Howling Abyss[/runecard]'s effect. Unlike the landmark, however, you can receive duplicates.

The Premade Decks

Here are the premade decks available to you. Honestly, they are all a little questionable -- the [runecard]Fiora[/runecard] + [runecard]Soraka[/runecard] "All Odds" seems the most reliable of the four.

[runedeckcollection]6417,6418,6419,6420[/runedeckcollection]

Strategies

For the Even and Odd buffs, you'll want to get units out quickly since your buff will grow them every turn. Try to include a few cheap spells since it will be mathematically impossible not to float spell mana. For the Common/Random-Champ buff, you'll want to focus your early game on stall and board control. For the Followers buff, you'll want spells that generate followers and/or control the board -- also try to include some cheap options since you'll want to play 2 spells to get the free follower. 

Decklists

Here are some cool decks we found on reddit!

[runedeck]6421[/runedeck]

[runedeck]6422[/runedeck]

[runedeck]6423[/runedeck]