For starters, the price of Sunderflock is predominantly tied to the Izzet Elementals deck, so if it falters, its price may crash
Heres an early proposed list: Creatures (25) 4 Psychatog 2 Putrid Imp 4 Mesmeric Fiend 4 Ichorid 2 Dark Confidant 2 Dimir Infiltrator 3 Golgari Grave-Troll 1 Golgari Thug 3 Stinkweed Imp Lands (20) Spells (15) Remember, this was before people thought about Dredge as being a mechanic that lets you skip your draw steps in order to rebuy cards youre not going to play
If you somehow knew for a fact that both players on either side of you were drafting Mardu decks, it would probably be in your best interest to draft either Sultai or Temur, because you'd get passed all of the best blue and green cards that your neighbors didn't want
WotC suggests that big creatures that are hard to interact with are positive additions to their environments. They might have been thinking of the Avabruck Caretaker / Hollowhenge Huntmaster when they said that, but Im not sure anyone would agree in the case of that card
His favourite Pokemon is Porygon, and his favourite Commander is Karn, Legacy Reforged