By sacrificing your own board with it on the stack, and by pre-emptying your opponents yards with anything from a Soul-Guide Lantern to an Author of Shadows, you can simultaneously wipe the board, get a load of EtBs, and slingshot into the lead
Griselbrand As one of the best card draw effects in black, not to mention a massive flying threat, Griselbrand is probably the most-played demon in MTGs history, despite being banned in EDH
Here's what it does: Note that the Blackblade is attached to lands
Myojin of Grim Betrayal The Myojin of Grim Betrayal embodies the force of ambition
There doesnt seem to be a timer built in but it would make sense for competitive play if there is already a pause button
This character lets you be a bit more aggressive in your challenging or get back some of your early-game characters to keep your game going smoothly