Additional options would be Rob the Archives , Jeska's Will , Commune with Lava , Act on Impulse , and Reckless Impulse
In terms of mechanics, before a game of Commander starts, each player sets aside their commander before shuffling their deck
Of the Zendikar creature-lands, Celestial Colonnade and Creeping Tar Pit are obviously the best, as they can give you an evasive beater to get those last points of damage through
Gladiolus Amicitia By the time you put Gladiolus Amicitia into play it's less about ramp and more about how to measure your landfall triggers to get the most out of them, and granting +2/+2 is the perfect complement to trample
Arcanine EX and Arcanine VMAX cards represent some of the most powerful and valuable variants available