Play it early to remove a mana dork or critical creature
Also, the lifegain hardly ever matters in a format like Commander, making it largely null in most cases, especially when small utility creatures are targeted
Temur Roar I could be a little bit biased here because I have personally been walloped by this deck so many times, but Temur Roar is a highly effective pile of ramp, with some big scary dragons at the top-end, which the face commander Ureni can cheat onto the field with ease
Team tournaments are always the most fun, and I cant recommend enough giving it a chance if you can make it
I think Overlord is the best due to its flexibility, but if you want more options, Wood Elves, Farhaven Elf, and Topiary Stomper are all quite reasonable