Balamb Garden, SeeD Academy / Balamb Garden, Airborne Balamb Garden, SeeD Academy puts an interesting spin on creature lands, as it only requires a mana investment once before it becomes Balamb Garden, Airborne at the cost of losing the land
I don't know if I agree it's a card you NEED, but if your Commander deck is specializing around Goblins, this card is something you are going to need and want
This is a pretty strong card, and somewhat obscure given the March of the Machine: The Aftermath set it came from
It could also pair nicely with a new legendary card called Bambi: Little Prince
Sure, you'll have to know a few more keywords by heart in order to understand the card at all, but that is a price we all have to pay if we want to draft modern sets
(It can't be blocked as long as defending player controls an Island.) : Target land becomes an Island until end of turn