2019-06-14 The cascade ability triggers when you cast the spell, meaning that it resolves before the spell
Hibernation Sliver makes all Slivers very difficult to kill as long as you have life points and mana left to play with, and with all your creatures so cheap you would usually have plenty of both when it counted
You can also sacrifice noncreature tokens, like Blood, Treasure, or Clues
Cabal Stronghold Play-testing (and math) has shown that this is not Cabal Coffers, one of the most broken lands of all time that's legal in most formats
Whirlwing Stormbrood Despite being a mere uncommon, Whirlwing Stormbrood is a seriously game-changing card for Dragons in Commander
While Vren is on the battlefield, creatures your opponents control are exiled instead of dying, and abilities that trigger when a creature dies won't trigger