After some extensive testing vs a variety of decks, I went about 7-3 (iirc) piloting this deck. It's performed quite well. I've lost two games vs Abzan, going 1-2 in each. Both games were right down to the wire but Siege Rhino is a hell of a card. The life gain is just so hard and mono red has nothing to negate the rhino. It's even tougher when on the draw and they have a turn 3 rhino and you can't even fated conflagration it on your turn. That's usually 7 full damage taken from a 4 mana spell with this deck. Eidolon of the Great Revel is still a beast, you can usually eek out 4 damage with him.
Against aggro, this deck is quite strong. They don't have enough large burn spells to deal with the phoenix/ dragon/ and sarkhan. A highlight of one of my games was harness by force'ing an opposing goblin rabblemaster when I had my own on the field and hitting for 13.
I recommend this deck highly. I'm still slightly considering the splash for white or black, but I really love how powerful the mana base is. I've also considered Nykthos but I don't want to get a two land hand with Nykthos and Eidolon. If we go white, we have Hushwing Griff and Deflecting Palm, two cards that can help fight against the Rhino. At least you can deflect the 4 on the swing and then the following turn fated conflagration it. Black has Thoughtseize, which can simply strip the Rhino. Black also has bloodstained mire which is tempting.
