Just acquired the relevant figs so here are some questions:

1. Possession:
Can you perplex up the range? MC on the LOSH PAC specifies that it cannot be further modified. Possession does not.


2. Unpredictible Omnipotence
When you roll doubles of your chosen number, does your target still get the +2 DMG even if Joker gets his 2 unavoidable DMG?

Possession no, he has no printed range so the mind control range limit is that of 4.

UO: Nope, they take the natural damage for the attack so it would still be 3, but Joker still takes the 2. Either Joker get 2 or the target.

First one is correct, but the second one is not.

Joker's Unpredictable Omnipotence STILL deals the extra two damage if you roll a double of the called number (hence why calling six is always so fun!), you just take damage yourself as well.

Correctamundo.

Melkhor and Antedox are correct.