My plan handles that much better, ie only Blue Eyes can destroy either Chaos Command Dragoon or Cosmo Queen, barring whatever plays Kaiba can make with his draw and single card in hand. And King Dragun's effect means Cosmic Barrier can't be used, and then we'd lose. If the facedown is something like threatening roar, 'Plan Leaving a Backup, just in case' leaves the board with 2 monsters on our side with weaker attacks to Kaiba's 2 monsters.
Click to shrink.If it's shrink, it doesn't matter for my plan, and I assume for 'Plan Leaving a Backup, just in case', not gonna bother mathing it since the life totals are pretty low for everyone.