Cards such as Grim Affliction, Soul Snuffers, and Yawgmoth, Thran Physician all help to spread -1/-1 counters, allowing you to slowly bring the stats down of creatures until they are no longer a threat
You dont lose if you have no cards in your deck, only when you go to draw a card but cant
Most opponents are not gonna risk that kind of blowout a second time, so you end up getting a huge unblockable threat for just one green mana
For One Mana - Black Time for part two of the For One Mana article series - read the first one here - where I take a closer look at one mana cards you could be playing instead of automatically going for the often played Viscera Seer, Village Rites, or Kayas Ghostform
First, have Azusa, Lost But Seeking and Ramunap Excavator, and at least three islands out on the battlefield