Enchantments There is a pretty sizeable pool of one black mana, when this creature dies, it doesnt die/returns to the field, both on enchantments and on instants, so Im not going to talk about those right now
Roll out your strongest characters If youve done a good job ramping and setting up your Blue Fairies, youll be able to start playing your stronger characters really quickly
Vanquish the Horde is better than Olivia's Wrath as there are times when you'll want to clear the board but you don't have enough Vampires in play to do it
Its better than Shivan Dragon in almost every way, save you have to spend all of your mana at once and only when the ability triggers
You could also use Roaming ThroneRoaming Throne as an extra Scion or Spawn that also doubles Annihilator 1 to Annihilator 2
By the time your opponent gets their own Evasive card out or has something else in their hand to deal with Mickey Mouse, Brave Little Tailor, theres a good chance youll already be within touching distance of a win