Olivia, Crimson Bride Vampires are seen as sexy Halloween monsters and Olivia could have been designed to fit that bill - if she weren't basking in blood instead, that is
They figured out the card was broken sometime between when Darksteel was sent out for printing and when the set was physically shipped
There she found the Eldrazi, and though she tried to destroy them, she could not
This card isnt just a trophy
So, if Zebstrika needs to fight back against a threat in the Active Spot, it can do so
Because the set was focused on wedges and the Dragonlords were ally-colored creatures, a misfit for a wedge set (wedge sets use two-color enemy pairs as those overlap two wedges), there wasn't a good home for them