With four Abzan decks in the Top 8 of GP Paris and an aggressive version of the deck taking the tournament down, it's clear that Siege Rhino is still well-positioned in Standard. The most interesting element in the Top 8 though is Zan Syed's Selesnya Collected Company deck. In a format with mana this good, eschewing Siege Rhino is a blatant statement than Syed believes Collected Company to be more powerful. Here's his list:
I really like the inclusion of Warden of the First Tree here. This deck is great at gumming up the ground, and Warden is a way to break up board stalls that can be hit off of Collected Company. This interaction is in some ways reminiscent of Ranger of Eos and Figure of Destiny.
As a Collected Company deck, there isn't a ton of room for spells here. Mastery of the Unseen is an amazing tool against control decks, and the lifegain is quite valuable against aggressive decks. The only thing that I don't like about this inclusion is that the deck only plays one Nykthos, Shrine to Nyx. I fully expect to see more copies of Nykthos in future versions of this deck, which I am positive will be a relevant force in Standard going forward.