Nothing Can Stop Me Now | Magic: The Gathering
Formats Nothing Can Stop Me Now is Legal in
Official Oracle Text for Nothing Can Stop Me Now
If a source an opponent controls would deal damage to you, prevent 1 of that damage.
At the beginning of each end step, if you've been dealt 5 or more damage this turn, abandon this scheme.
Official Rulings for Nothing Can Stop Me Now
6/15/2010 : The prevention effect doesn't affect damage dealt directly to a planeswalker you control (such as combat damage). It can prevent noncombat damage that's redirected from you to a planeswalker you control if you apply this effect first.
6/15/2010 : The last ability won't trigger at all unless, as an end step starts, you have already been dealt 5 or more damage that turn. It doesn't matter whether any of it was combat damage or not, nor does it matter who controlled the sources of that damage. (In other words, it will count damage dealt to you by sources you control.)
6/15/2010 : The effects from more than one of these schemes are cumulative.