Cards with hexproof, shroud, indestructible, protection, and ward are notoriously difficult to remove from the battlefield
3 Gandalf, Westward Voyager The friendly Wizard Gandalf, Westward Voyager encourages you to cast those big spells that Commander loves by giving you extra copies of them
Even if you dont have a lot of mana to spend, Wan Shi Tongs second ability can often make it worth running out for just two
You do this when you use a land to make mana, when you attack with a creature, or when you activate an ability that has the symbol as part of its cost (means "tap this permanent")
That being said, the Vikavolt that comes in the prebuilt deck looks insanely strong: if you have the new special Voltaic Energy card attached to it, its Giga Railgun will be doing an insane 280 damage
Most holographic cards only apply foil to the front side due to cost and design constraints