A thing to note about Danovan: He hates shields, and seems to want some potential PC in any deck
On BE being a dead card: It may be harder to notice than your case. His Entropy deck has 6 Antimatters, so it can't fit anymore. It has 4 dragons, and it can't afford more. If one wanted to optimize out BE, the replacement would be a pillar. It's a little harder to notice quanta issues, but a couple Antimatters help stall until the quadratic growth of quanta kick in