If you want to learn more about K-Runs brewing process, check out this recent interview I had with him
If youre going to be attacking, make sure you have Anduril attached to a legendary creature, since the tokens will enter the battlefield tapped and attacking if you do
Commander can be played with from 2 to 5 players but ideally, 4 is a bearable maximum
Look at most competitive or even just well-developed decks and you can probably find some ETB or dying triggers
Mina and Denn, Wildborn, Azusa, Lost but Seeking, and Aesi, Tyrant of Gyre Strait each allow you to do this
Used properly, this can prove to be utterly devastating to an opponents plans