Kess, Dissident Mage works wonders in our Orc Tribal as it is merely a spellslinger deck and she allows us to cast Instant and Sorcery spells from our graveyard, so she becomes an amazing value engine
When you add in time for rolling and wacky effects, Planechase Commander games can take a while, too, so you should probably expect to settle in for a little longer than normal, though some of the new planes really encourage attacking and moving the game along, so maybe less than you might think if you're used to Planechase Commander already
Sold individually or as a set of four, each of the decks represents a different game from the RPG series long history
Cavalier of Thorns Cavalier of Thorns sort of splits the difference between two of greens iconic abilities: ramping your mana base, and returning a card to your library Reclaim-style
Probably the best creature to equip it to would be Zurgos Vanguard, whose power is based on the number of creatures you control