Using them just to get a hit in is sometimes good, but not enough to warrant playing an otherwise useless card
Aminatou's Augury Aminatou's Augury has a hefty mana cost, but its one of my favorite big spells to cast
The payoff of this meld pair, doesn't win the game on the spot, and I'd stress that to your Bracket 3 playgroup because while this deck puts together powerful cards, it is not optimized to be unbeatable, and more focused on a huge play with some Golgari death and graveyard interaction molded in
As life gainers there is little to chose between Sphinx and Griselbrand and it entirely comes down to which of their other effects and attributes are more suited to your build
[[nid:568973]] The 6 and 5 casting costs of the front and back side respectively are also reasonable and not much different, meaning you could choose to cast the robot side first, despite having lower Power and Bolster effect
You play Baru and return it to your hand with the trigger from Nature on the stack