Need to know if this combo works
[[Yedora, grave gardener]], [[Proteus machine]] and [[Temur war shaman]] are on the battlefield.
Proteus machine dies (e.g. from combat) -> yedora triggers -> proteus machine becomes a face down forest -> I choose to reveal proteus machine for 0 mana -> Tremur war shaman triggers, and I choose to let proteus machine fight any creature (with at least 2 power) so that proteus machine dies -> repeat until all creatures with >=2 power on the board is dead.
One thing I am uncertain about is the Temur war shaman: "Whenever a permanent you control is turned face up, if it is a creature, you may have it fight target creature you don't control". When proteus machine is face down, it is a forest land and not a creature, but the card itself is a face-down creature? Will Temur war shaman trigger on this?