Mobilize is already great, and you were already going to attack like crazy with your tokens, so Zurgo makes it hurt
4 The Tabernacle At Pendrell Vale - Legends Rare - $3,400 A fascinating land that doesnt actually tap for mana, The Tabernacle at Pendrell Vale is a hard to deal with taxing effect that punishes your opponent for having a lot of creatures
While the card may not have been explicitly built for Commander, it was built in a world where Wizards R&D knew that the format existed
Making your opponent discard when it enters while just being a large flying threat puts on a fantastic amount of pressure and means this is always at worst at two-for-one
You can exile him for six mana to bring him back transformed into Bahamut, Warden of Light - a flying enchantment creature Saga that buffs your board, gives everything flying again, and eventually Giga-flames a target off the board before looping itself back