From: http://tappedout.net/mtg-decks/100-delver/

$100 budget version of one of modern's most played deck.

Sideboard is not included because it is entirely dependent on your meta and should be worked on in collaboration with others.

Things to know about Delver:

This is a tempo deck. You have to stick a threat early and protect it. 12 cantrips helps flip Delver of Secrets  Flip and helps pump out 1/1 tokens from Young Pyromancer. This deck's upgrades are mostly in the manabase or adding another colour.