Triggers

[bravado883]

No more missed trigger nonsense at bigger tournaments. Rules changed so you only have to demonstrate awareness that the trigger happened; ie if you attack with  {Pyreheart Wolf} and don't say anything, if you're opp tries to flash in  {Restoration Angel}, as long as you say "you can't do that," you're good. Only way to miss the trigger is to genuinely forget, like if you put you wolf in the graveyard.

[Wally]

See here for the full article.
http://www.wizards.com/magic/magazine/article.aspx?x=mtg/daily/feature/233

[InfinitiveDivinity]

Good read, thanks dude

[Dudecore]

Most certainly a better system.