Nowadays, it's almost expected for your best creatures to come with an enter the battlefield trigger
Transparent facade and white interior
This means that if an opponent wants to play a land, they'll have to ensure that there aren't enough for Impending Disaster to trigger
Because instants can be cast at any point you have priority, theyre great for protecting creatures, killing creatures, or stopping other spells
This was often used as discard fodder to things like Psychatog, Wild Mongrel, or Merfolk Looter, then cast from the graveyard for two mana
'Outside the game' is text that doesn't normally work in Commander, but you're already playing silver-bordered cards, so there are no rules