another “Arch” charm
My guess is white. We already have blue and green as far as I remember, leaving white, red, and black.
card that makes you choose odd or even
Reprint of Extinction Event?
new artifact token called Munitions
Combat trick token? I doubt it does direct damage, but a combat trick (like tap+sac for +1/+0 until end of turn) seems possible.
card that lets you take control of an opponent
Definitely an Eldrazi card. New Emrakul?
card that grants an ability to Slivers
So a Sliver.
Edit since I got a chance to read the rest:
“If it’s not a creature, it becomes a 0/0 Robot artifact creature.”
New scissors card?
“You may play lands from your graveyard.”
Crucible of Worlds reprint would fit really well here.
“Artifact cards and red cards in your hand have”
… Warp X, where X is ??? I’m guessing.
“X is the number of differently named lands you control.”
Llurgoyf card probably, especially since it’s an elemental. Probably 2-3 mana?
China (and some others).