You have a reasonable number of things to give double strike thanks to explosive Foundry Street Denizen turns, but multiple double strike spells dont stack well
As for the other three (Evolution SageEvolution Sage, Metallic MimicMetallic Mimic, and RealmwalkerRealmwalker), while they're creating synergy with the deck, I would have preferred something a little more oceanic, or at least from Ixalan itself, like Roaming ThroneRoaming Throne, for example
I was sitting in class scribbling furiously into my notebook
Colossus Hammer is one of those cards Im always cautious to include into our Top 5
The fact that it has convoke means that most people have not actually paid fifteen for it, but it still shares the fifteen-drop slot with only one other creature
the ones that are more miss will still be good in an enchantress/sagas shell, but arent worth shouting about