It turned out that after playing several times, Nivmagus sucks in this deck, so I removed it and put 3
Flamekin Harbinger (because I do not have 4) and 1
Wee Dragonauts.
It turned out that 2 times I won the game by inflating the
Wee Dragonauts. Besides it just gets +2/+0 (not +3/+0 like Cyclops of
Kiln Fiend), with double strike it works as well as the other creatures because it has flying and most of the times I don't need to make it unblockable.