Quote from Chickmagnet handle Wampa1 »I just realized, they didn't even introduce a new mechanic this year! I'm not counting "Commander Ninjutsu", that's a single card twist on an existing mechanic.
2011: Join forces
2013: Tempting offer
2014: Lieutenants (and PW's as commanders)
2015: Experience counters, Myriad
2016: Partner, Undaunted
2018: Half-assing it
Technically they could've coined "Commander Storm" for that cycle but they opted against using a keyword for some reason