Additionally, lands that enter the battlefield tapped can slow down your game plan the more you lean on them but will often be easier on your budget
Waste Not 8 Swamp 4 Fatal Push 4 Field of Ruin 4 Thoughtseize 4 Waste Not 3 Geier Reach Sanitarium 3 Castle Locthwain 3 Go Blank 3 Liliana of the Veil 3 Sheoldred, the Apocalypse 3 Sunken Citadel 2 Hive of the Eye Tyrant 2 Sheoldred's Edict 2 Bandit's Talent 2 Hostile Investigator 2 Path of Peril 2 Extinction Event 1 Urborg, Tomb of Yawgmoth 1 Demolition Field 1 Go for the Throat 1 Takenuma, Abandoned Mire 1 Duress 1 Graveyard Trespasser 2 Duress 2 Invoke Despair 2 Mazemind Tome 2 Path of Peril 2 Sheoldred's Edict 1 Pithing Needle 1 Reckoner Bankbuster 1 Graveyard Trespasser 1 Extinction Event 1 The End Waste Not is all about discard spells
Four life is a critical number as most lifegain cards that trigger off a certain threshold of life gained care about gaining 3 or 4 lifesee Griffin Aerie and Valkyrie Harbinger
Roughly, that would be 12 of each uncommon, 3 of each rare, and 1.5 of each mythic
Official cards can vary slightly from print run to print run, and different sources round the metric conversions differently
(10/4/2004) The two lands do not count toward your normal one land you can play each turn