Dawn's Truce is a great example where giving a specific person an extra card isnt really a downside, and putting some Commander politics into the mix makes for more fun games
Rolling the die happens immediately (no one can respond to it), but any ability that triggers as a result goes on the stack, and can be responded to like other triggered abilities
If Xyz is summoned, you can instantly reduce all other monsters in the field to ashes Safety Warning Warning Small Parts Choking Hazard EXTREME HEAT AT THE VIEW
He possessed Anzu to convey this message and that he was prepared to die for his actions, so that Dark Marik could be defeated
Blasphemous Act is a token decks worst enemy
You can keep Blinkmoth Infusion back for surprise blocking in a Tempered Steel kind of deck, but were really talking about infinite combos with this card and either Reiterate or Lithoform Engine