MooseMouthMthafuga
Veteran
We have answers to both of those from the footage released the last couple days.
In the Thanos teaser leading up to the "Infinity Wars" announcement, they show Loki's staff along with the Aether, the Power Gem from "GOTG", etc. So that's definitely the Mind Gem.
In the new "Age Of Ultron" footage shown at the event yesterday, Tony and Cap are talking about how Scarlett Witch showed them their "dark sides" and basically tore the team apart.
I assume this is directly after Hulk goes nuts.
Fred.